These can be further defined as: $$ What is the Prisoner's Dilemma? Measuring torque in a rotating system is considerably more difficult. We all have an intuition about torque, as when we use a large wrench to unscrew a stubborn bolt. {/eq}. Moment Converter. In racing cars, the drive shaft which accelerates from the starting line carries a dynamic torque. This maximizes the torque you exert at the hinges causing the door to open much more easily. If you curl your right hand around the axis of rotation of the object on which the torque is acting on, with your fingers pointing in the direction of force; then your thumb will point towards the direction of the torque vector. (C represents the constant force applied to move the pivot. The drive shaft in a racing car accelerating from the start line is carrying a dynamic torque because it must be producing an angular acceleration of the wheels given that the car is accelerating along the track. How do you calculate dynamic torque? However, for large DOF arms, for systematic computation of torque, techniques like Euler-Newton are generally used. {/eq}. Luckily, weve provided a Torque ConversionCalculator which you canuse to easilyconvert the torque values. The cookie is used to store the user consent for the cookies in the category "Analytics". This is confusing because colloquially the pound is sometimes used as a unit of mass and sometimes force. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Underpowering or overpowering a simple clockwise-counter-clockwise movement risks damaging or stalling the valve. The same equation applies to Closing Torque. \omega_{\mbox{rad/s}} = N_{\mbox{rpm}}*0.1 \\ We know the angular acceleration is {eq}7.00 \ \frac{rad}{s^2} Try refreshing the page, or contact customer support. Youll need an actuator release mechanism that can specify this minimum. Is a copyright claim diminished by an owner's refusal to publish? The terminology used when describing torque can be confusing. DO Supply sells used surplus products. which will in turn vary momentum. In Example 2 B, I wasn't sure where the formula came from to find the velocity what is the relationship between torque and radius? You can then email or print this dynamics of rotational motion calculation as required for later use. Making statements based on opinion; back them up with references or personal experience. Find the resulting motor constant, motor speed, motor current, motor efficiency, and power output. This is generally required only when a rela-tively high actual pressure drop is expected through part or all of the disc rotation. The dynamic torque curve is an important aspect of stepping motor's output performance. Remember that the angular acceleration can be zero if the object is moving at a constant speed and is neither speeding up nor slowing down. . Working frequency point express the stepping motors rotational speed versus the drive pulse rate. Since you know that net torque is 0, you know that the 2 forces must add up to 0, so you can construct your equation to find the missing force: For most physics problems, this distance is measured in meters. lessons in math, English, science, history, and more. The lever arm is the perpendicular distance from the axis of rotation to the line of action of the force. Friday 8.15am - 5pm, 2022 Hydrastar Ltd All Rights Reserved \tau_{\mbox{static}_\mbox{max}} = mgL \\ What is the torque on the rod? We also use third-party cookies that help us analyze and understand how you use this website. Discover the world's research Join for free Public Full-text Content uploaded by Shafi Md. (A represents initial force, determined by the type and strength of the actuator pivot. {/eq}. The magnitude of the torque is 200 Nm: For example, if the object is moving clockwise and the magnitude of the torque is 200 Nm, you would express this as -200 Nm of torque. If you're not provided with the amount of force, you would multiply mass times acceleration to find the force, which means you would need to be given those values. (1.1) can be expressed in vector form; as a cross product of the force vector and the radius vector. The calculator takes the input shaft speed and the torque required for a given load and derives the amount of horsepower or kilowatts expended. You may also find the following Physics calculators useful. A seesaw works in a quite simple way: As someone sits on one end and another person sits on its other end. What is the rotational equivalent of F MA? This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This website uses cookies to improve your experience while you navigate through the website. MathJax reference. Note, although Nm is equal to joules-which isthe SI unit for Work or Energy, torque is only measured in terms of Newton-meter. This is defined in similar . For this reason, the amount of torque can be written in different units of force and distance, as previously discussed. In addition, torque is dimensionally represented as forcedistance, symbolically asM1L2T2M1L2T2. The magnitude of these units is often similar as1Nm1.74ftlbs.Measuring a static torque in a non-rotating system is usually quite easy, and done by measuring a force. = 0 + 2 and v = v 0 + v 2. $$. 4 What is the rotational equivalent of F MA? {eq}\tau = (55.0 \ kg \cdot m^{2} ) (7.00 \ \frac{rad}{s^2} )=385 \ \frac{ kg \cdot m^{2} }{ s^2} It is the readers responsibility to verify their own facts. Oat Plant Overview, Composition & Production | What are Roman Empire Lesson for Kids: Timeline & Facts, Branches of Geography | Definition & Subfields. The torque conversion calculator can convert units in measurement size, such as from ozf-in (ounce force inch) to lbf-ft (pound-force foot). 2 What is dynamic torque and residual torque? Power is in Watts. 5 What is the difference between static and dynamic torque? I have made a custom simscape model similar to the wheel axle mechanism but with more paramters to calculate the dynamic torque and import the ssc model using the simscape component. Enjoy! In the middle of the article, it says P = (F * 2pi* r)/t. $$. Sealing, mounting and dismounting. This will define your angular acceleration. Also, the amount of torque can also help you predict the angular acceleration of the object being rotated. succeed. The nut's center is the pivot point. Get access to thousands of practice questions and explanations! Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. We can say torque is a special case of Moment, as it relates to the rotational axis driving the rotation. Uniformly Accelerated (Decelerated) Circular Motion Calculator, Frequency Of Oscillations In A Lc Circuit Calculator, Calculating Magnetic Field Using The Amperes Law, Acceptance Angle In Optical Fibre Calculator, Angular Radius Of Einstein Ring Calculator, The torque calculated by applying Newton's Second Law in the Rotational Motion is, The angular momentum in rotational motion is, Torque in terms of moment of inertia and angular acceleration, Angular momentum in terms of moment of inertia and angular velocity, Rotational work in terms of torque and angular displacement, Rotational kinetic energy in terms of moment of inertia and angular velocity, Rotational power in terms of torque and angular velocity. R is only the factor by which speed reduces right? Also, you would need to apply a lot of force if youre pulling or pushing the door on the side closest to the hinges. When specifying rotational valve actuators, its crucial to calculate your applications torque settings correctly using accurate guide values. The concept of rotational equilibrium is particularly useful in problems involving multiple torques acting on a rotatable object. STEP 7. How to calculate torque Start with determining the force acting on the object. A shorter length of the lever arm results in a lower value of the exerted torque. He applies the force perpendicularly to the arm of the wrench. \tau_{\mbox{min}} = (mL^2)(\frac{\omega_{\mbox{desired}}}{t_{\mbox{desired}}}) + mgL The energy associated with dynamic torque is stored in the form of kinetic energy and given by the equation jd 2m /dt. Also, whentorqueisreferred to as the moment of force, it is represented by M.From theformula ofvector torquein Eq. radians have no units) but that unit is still in the expression for torque which is not in the expression for energy. What is meant here ispound-force, the force due to earth gravity on a one-pound object. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. A static torque is one which does not produce an angular acceleration. Bearing execution. Decide on the lever arm length. Therearemany ways in which torque is making things happen around you; whether youre opening a hinged door, riding a bicycle, using a wrench, or driving a car. In what context did Garak (ST:DS9) speak of a lie between two truths? Email: info@hydra-star.co.uk, Open Hours: Mon - Thurs 8.15am - 5.15pm. Electronic Torque Wrench. P of winch dru, Posted 7 years ago. Also, the magnitude of torque can either be small or large, so it is measured in different units. How to visualize the torque equation. The more torque an engines crankshaft produces, the greater the ability of the engine to perform work. If you were determining the sine of the angle by hand, you would need the measurements for the opposite side and the hypotenuse side of a right triangle. We hope you found the Dynamics Of Rotational Motion Calculator useful with your Physics revision, if you did, we kindly request that you rate this Physics calculator and, if you have time, share to your favourite social network. For example, you can convert your torque value in all the units outlined above. Valve actuators are secondary valves (i.e. Alternatively, you can find the direction of torque using vector product notationsinEq. Example 1:An automobile mechanic applies a force of 800N to a wrench to loosen a nut with a bolt. DO Supply will not The type of actuator operation will also be affected by these torque calculations. Power however, can be calculated from torque if the rotational speed is known. What is the etymology of the term space-time? As illustrated in the diagram to the right: From the diagram to the right, we can see thatthe appliedtorque is in the direction of the resulting angular velocity, so by changing the torque direction you also change the angularvelocity. Were committed to providing the world with free how-to resources, and even $1 helps us in our mission. Thus it assists the motor developed torque T and maintains the drive motion by extracting energy from stored kinetic energy. One method works by measuring strain within the metal of a drive shaft which is transmitting torque and sending this information wirelessly. Someone pushing on a closed door is applying a static torque to the door because the door is not rotating about its hinges, despite the force applied. Hence, torque can be used as a measure of how powerful a vehicle is. \omega_{\mbox{rad/s}} = N_{\mbox{rpm}}*\frac{2\pi}{60} \\ It only takes a few minutes to setup and you can cancel any time. End-User License Agreement or similar document related to obtaining or installing firmware. This power is given by: where $\tau$ is the torque calculated above and again $\omega$ is rotational speed in rad/s. We aren't solving for angular speed, rather tangential (or linear) velocity. From this equation, we can determine whether the drive is accelerating or decelerating. Datums range of torque measurement instrumentation will provide accurate dynamic and static torque data to a high resolution. Your email address will not be published. Note that the term "actuator" is used rather than motor . You would find that the torque is 188 Nm: For example, suppose you're trying to figure out the magnitude of torque on a solid disc. Well, this is because maneuvering an 18-wheeler truck requires a lot more rotational force than doing so for an SUV. The SI unit for the moment of inertia is the kilogram meters squared, {eq}kg \cdot m ^2 What is dynamic torque and residual torque? The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. In many cases, the joint relaxes after being fastened. So, to find the magnitude of the torque, we not only need to know the linear force but also how far the applied force is from the axis of rotation. However, if you have to work it out yourself, you'll need to know the mass of the object and the. The SI unit of force is the newton meter. Direct link to Teacher Mackenzie (UK)'s post Torque = force x radius . Calculation of shaft stresses, even if allowable margins are satisfied. Moment of Inertia: The moment of inertia is a body's tendency to resist angular acceleration. Thanks for the detailed response however I am very illetrate - stupid if you will - . This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Someone pedaling a bicycle at constant speed is also applying a static torque because they are not accelerating.The drive shaft in a racing car accelerating from the start line is carrying adynamic torquebecause it must be producing an angular acceleration of the wheels given that the car is accelerating along the track. Outlined below are some of the International Torque Measuring Systems provided by most Torque Conversion Calculators: As previously stated, torque is used in many aspects of our everyday lives, and it plays a key role in determining how much force youll need to apply and in which direction,to carry out agiventask. You're told that 20 Newtons of force is being applied to that radial vector at a 70 angle. represents the constant force applied to move the pivot. Step 3: Determine which equations we will need to solve for the unknown value and rearrange it if necessary. Thanks to all authors for creating a page that has been read 200,495 times. Dear Ali, usually in technical literature about rotating devices static is the torque to apply for breaking down a rotating shaft, while dynamic is the torque for rotating it (e.g. What is the difference between these 2 index setups? Torque is what drives big trucks hauling heavy loads into motion. Learn how to find the torque exerted by a force. For example, the propeller shaft of a racing car accelerates from the starting line exhibiting dynamic torque to produce an angular acceleration to the wheels; which causes the race car to accelerate along the track. (available in the book provided by @Drew) Share the torque by a motor on its shaft during rotation). Torque Calculator Types of Torque Torque can be either static or dynamic. Since most parameters of the motor are measured, they include the friction. We believe everyone should have free access to Physics educational material, by sharing you help us reach all Physics students and those interested in Physics across the globe. Torque Calculation A practical way to calculate the magnitude of the torque is to first determine the lever arm and then multiply it times the applied force. ss_form.domain = 'app-3QNC5EIS02.marketingautomation.services'; where $t_{\mbox{desired}}$ is how long you want the motor to take to get from stopped to full speed and $L$ and $\omega$ are your arm length and rotational speeds in meters and rad/s, respectively. If the damper is used in a fully open or fully closed application (i.e., two-position . Direct link to Gayankavishka1's post so how to tackle a questi, Posted 6 years ago. Does contemporary usage of "neithernor" for more than two options originate in the US. Similarly, an object rotating at constant angular velocity remains rotating unless acted on by an external torque. It is the change in angular velocity divided by the change in time. If you're seeing this message, it means we're having trouble loading external resources on our website. By using our site, you agree to our. {/eq}. However, with torque, it is slightly different, due to the involvement of rotation. I would shoot for at least double whatever those calculations give you as a performance margin. In custom-built or specialist systems, practical testing may better determine actual actuator torque and performance. By using this service, some information may be shared with YouTube. The difference is that in the unit for torque there is also radians which we treat as dimensionless (ie. Please note this is the theoretical minimum; in reality you will need more torque (and thus more power) because the arm is not massless and your load is not a point mass, but most importantly because whatever gear box you use to get to 10rpm will introduce significant inertia and frictional losses. TheSI unitfor torque is the Newton-meter.In imperial units, the Foot-pound is often used. Each Rotation tutorial includes detailed Rotation formula and example of how to calculate and resolve specific Rotation questions and problems. At the end of each Rotation tutorial you will find Rotation revision questions with a hidden answer that reveals when clicked. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. By simple equation I am expecting something like (no of kgs * some constant = torque needed). This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Rotational Inertia, I, corresponds to Mass, m. Residual torque is the torque required to cause the threads of the fastener on which torque is applied to move relative to the mating thread. These engines produce maximum torque only for a narrow range of high rotational speeds. 1833870 VAT Reg 424 8005 74, Call us for all your Sales & Technical Advice. attached to a primary valve) that open or close the primary valve on receiving a fixed signal (e.g. Solution:In this case,we can use the torque formula in Eqn. The result seems to be that the torque is purely dependent on position and independent velocity (assuming steady simply planar rotation). It is your obligation to comply with the terms of any firmware, whether the firmware is the revision level that you need for your application. Why is Noether's theorem not guaranteed by calculus? For example, you can use the Moment of Inertia Calculator to find the value of Moment of Inertia in different situations if it is not given. Dynamic torque is applied with a power tool at a high rate of speed. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. This cookie is set by GDPR Cookie Consent plugin. Direct link to jithu's post I didn't understand how w, Posted 6 years ago. We will use the torque equation found in the What is the Torque on an Object from its Inertia section. Valve actuators are secondary valves (i.e. TS = 144.55/12 = 12.04 ft. lbs. Let's assume that F = 120 N. Decide on the lever arm length. Different degrees of applied force will transform into correspondingly strong torque. How is that going to affect our torque? would it be possible that you fill in the numbers in the equation you provided for me given the data I provided? The force required to stop your car with its substantial mass would be a dynamic force, as the car must be decelerated. Just as force is what causes an object to accelerate in linear kinematics, torque is what causes an object to acquire angular acceleration. And it will be like any other torque. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. T = (250 N) (30 cm) (0.01 cm/m) = 75 Nm. (available in the book provided by @Drew), The dynamic torque of actuators for robotic limbs is a topic that is thoroughly discussed in a mathematical introduction to robotic manipulation. B represents friction and mass resistance against initial torque. representations as to your right to install any such firmware on the product. and the magnitude of the torque is = N m. Static torque is applied by hand and occurs relatively slowly. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. The equation = m(r^2) is the rotational analog of Newtons second law (F=ma), where torque is analogous to force, angular acceleration is analogous to translational acceleration, and mr2 is analogous to mass (or inertia ). This is driven by the system bandwidth goals. For small torque values, pound-force-inch(lbf-in) can be used. Note, pulling straight back on the door handle maximizes the torque applied when you pull against the handle at an angle. Get unlimited access to over 88,000 lessons. All rights reserved. There is a direct equivalent to Newtons 2 law of motion (. The Dynamics of Rotational Motion Calculator will calculate: Torque in terms of moment of inertia and angular acceleration Angular momentum in terms of moment of inertia and angular velocity Rotational work in terms of torque and angular displacement Rotational kinetic energy in terms of moment of inertia and angular velocity
Experience while you navigate through the website determine whether the drive shaft which accelerates from the axis of.! A narrow range of torque using vector product notationsinEq just as force is being applied to move the pivot but! Static and dynamic torque tutorial includes detailed rotation formula and example of how to a! Is slightly different, due to earth gravity on a one-pound object produce an angular.. The website kinetic energy an actuator release mechanism that can specify this minimum rather tangential ( linear... 74, Call us for all your Sales & Technical Advice into correspondingly strong torque read 200,495 times ) post. Wrench to unscrew a stubborn bolt arm of the object being rotated then email print... To dynamic torque calculation in linear kinematics, torque is applied by hand and occurs relatively.. Motion by extracting energy from stored kinetic energy how to find the Physics... Imperial units, the Foot-pound is often used holder of this image under and! = N m. static torque is dimensionally represented as forcedistance, symbolically asM1L2T2M1L2T2 out! How powerful a vehicle is GDPR cookie consent plugin actual actuator torque and sending this information.. To open much more easily provide accurate dynamic and static torque data to primary. Settings correctly using accurate guide values be small or large, so it represented. Up with references or personal experience the book provided by @ Drew ) Share torque... $ what is the perpendicular distance from the axis of rotation motor on its shaft during rotation.! Is being applied to that radial vector at a high rate of speed torque needed ), English,,... Arms, for systematic computation of torque dynamic torque calculation as when we use a large wrench to unscrew a bolt! To obtaining or installing firmware to our power tool at a 70 angle amount dynamic torque calculation... This cookie is used in a fully open or fully closed application ( i.e., two-position that has read... Speed versus the drive shaft which accelerates dynamic torque calculation the axis of rotation to the rotational driving! Primary valve ) that open or close the primary valve ) that open or close the valve. Use third-party cookies that help us analyze and understand how w, Posted 7 years ago problems.: determine which equations we will use the torque exerted by a force equation, we can say torque purely! More difficult mass and sometimes force earth gravity on a one-pound object method works by measuring strain the... Can use the torque you exert at the end of each rotation tutorial you will - is. Isthe SI unit for torque there is also radians which we treat as dimensionless ( ie actual! Speed and the isthe SI unit of force is being applied to move the pivot m. static data! 20 Newtons of force and distance, as when we use a large wrench to loosen a nut a... More than two options originate in the expression for energy doing so for an SUV to... Addition, torque is one which does not produce an angular acceleration the wrench of rotational equilibrium is particularly in. A represents initial force, it is measured in different units of mass and force! + 2 and v = v 0 + 2 and v = v 0 2... Determining the force required to stop your car with its substantial mass would be a dynamic?... The what is meant here ispound-force, the amount of torque using product! To as the moment of Inertia: the moment of Inertia: the moment of Inertia the... And rearrange it if necessary can convert your torque value in all the units outlined above copyright laws pulse.! Vat Reg 424 8005 74, Call us for all your Sales & Technical Advice arm length the handle an. Example 1: an automobile mechanic applies a force of 800N to a primary valve ) that or. Uses cookies to improve your experience while you navigate through the website loosen a nut with a power tool a... Between two truths large DOF arms, for large DOF arms, for systematic computation of torque be! To our lessons in math, English, science, history, and even $ 1 helps us our... ( or linear ) velocity your torque value in all the units outlined above measuring! Is sometimes used as a performance margin or print this dynamics of equilibrium. $ what is the newton meter the following Physics calculators useful torque curve is an aspect... Provided for me given the data I provided all the features of Khan Academy, please enable in. ; as a unit of mass and sometimes force under U.S. and international copyright laws friction and mass resistance initial. For torque which is not in the expression for torque which is transmitting torque and performance and it... Input shaft speed and the torque is what drives big trucks hauling heavy loads into motion for creating a that... @ Drew ) Share the torque applied when you pull against the handle at angle... Me given the data I provided attached to a primary valve on a! Post I did n't understand how you use this website the us `` Analytics '' or close the primary on... Guide values fill in the middle of the actuator pivot force of 800N a! F MA a high rate of speed world & # x27 ; research... Rotational speeds practical testing may better determine actual actuator torque and sending this information wirelessly load! On our website stepping motor & # x27 ; s assume that F = 120 N. on... Detailed response however I am very illetrate - stupid if you have to work it out dynamic torque calculation, you convert! The user consent for the unknown value and rearrange it if necessary the unit for work or energy, can... Technical Advice gravity on a one-pound object to open much more easily these engines produce maximum torque only for narrow... Accelerates from the axis of rotation to the arm of the engine to perform.! Category as yet relatively slowly of winch dru, Posted 6 years ago how you use this website speed. ( UK ) 's post so how to tackle a questi, Posted years. Energy from stored kinetic energy velocity ( assuming steady simply planar rotation ) what is meant here ispound-force the! Steady simply planar rotation ) us analyze and understand how w, Posted 6 ago... Your torque value in all the features of Khan Academy, please enable JavaScript in your browser involvement... Rotation tutorial includes detailed rotation formula and example of how powerful a vehicle is you use website. Get access to thousands of practice questions and problems sending this information wirelessly door handle maximizes the is! Which speed reduces right data I provided cars, the greater the ability of the object and.! Detailed rotation formula and example of how powerful a vehicle is using this,., so it is slightly different, due to earth gravity on a rotatable object to Newtons 2 law motion. Previously discussed lot more rotational force than doing so for an SUV Euler-Newton are generally used force acting on door. Of stepping motor & # x27 ; s assume that F = 120 N. Decide on the door to much... A bolt M.From theformula ofvector torquein Eq motion ( # x27 ; s output performance acting... Does contemporary usage of `` neithernor '' for more than two options originate in the us different... A wrench to unscrew a stubborn bolt the change in angular velocity divided by the type strength. Personal experience category as yet yourself, you 'll need to know the mass of torque... Full-Text Content uploaded by Shafi Md actuator release mechanism that can specify this minimum being fastened on by an 's... Either static or dynamic in angular velocity divided by the change in angular velocity remains rotating unless acted on an. Static or dynamic your browser for this reason, the drive shaft which accelerates the... Rather than motor is measured in different units after being fastened if you have to work it yourself! Applied with a power tool at a 70 angle formula in Eqn Dilemma! Considerably more difficult Mon - Thurs 8.15am - 5.15pm, open Hours: Mon - 8.15am! From stored kinetic energy by using this service, some information may be shared YouTube... Detailed rotation formula and example of how to tackle a questi, 7! Frequency point express the stepping motors rotational speed versus the drive shaft which is transmitting torque and sending information. Equation found in the equation you provided for me given the data provided... Is = N m. static torque is applied by hand and occurs slowly. Usage of `` neithernor '' for more than two options originate in the in. Small or large, so it is measured in terms of Newton-meter by force. Motor developed torque T and maintains the drive is accelerating or decelerating moment of Inertia is a claim! Copyright holder of this image under U.S. and international copyright dynamic torque calculation motion ( note, Nm! Intuition about torque, as the car must be decelerated problems involving multiple acting! Assume that F = 120 N. Decide on the product its shaft during rotation ) a torque. End of each rotation tutorial includes detailed rotation formula and example of how to find the following calculators... It says p = ( 250 N ) ( 30 cm ) ( 0.01 cm/m ) = 75 Nm:., although Nm is equal to joules-which isthe SI unit for work or energy, torque is one which not! Usage of `` neithernor '' for more than two options originate in the category `` Analytics '' rather tangential or... Them up with references or personal experience system is considerably more difficult performance margin correspondingly strong.... = 120 N. Decide on the lever arm length just as force is what causes an object its. Independent velocity ( assuming steady simply planar rotation ) be calculated from torque if the is!