torque

Also known as moment of force

In physics and mechanics, torque is the rotational correspondent of linear force. It is also referred to as the moment of force, or simply the moment. Just as a linear force is a push or a pull applied to a body, a torque can be thought of as a twist applied to an object with respect to a chosen axis. For example, driving a screw uses torque to force it into an object. The torque is applied by the screwdriver, rotating around its axis, to the drive on the head of the screw.

AI overview

Torque is a twisting force that causes objects to rotate around an axis, similar to how a regular push or pull force causes objects to move in a straight line. It matters because many everyday tasks—like driving a screw with a screwdriver—depend on torque to work.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Physical quantity.name: Torque
Physical quantity.image: Torque animation.gif
Physical quantity.caption: Relationship between force F, torque τ, linear momentum p, and angular momentum L in a system which has rotation constrained to only one plane (forces and moments due to gravity and friction not considered)
Physical quantity.unit: N⋅m
Physical quantity.otherunits: pound-force-feet, lbf⋅inch, ozf⋅in
Physical quantity.symbols: \tau, M
Physical quantity.baseunits: kg⋅m2⋅s−2
Physical quantity.dimension: wikidata

via Wikipedia infobox

Research

37,652 papers

Investigating Torque-Speed Relationship of Self-Tapping Screws.Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2021Wilkie J, Docherty PD, Stieglitz T et al.DOI: 10.1109/EMBC46164.2021.9630356
Just noticeable differences for elbow joint torque feedback.Scientific reports · 2021Kim H, Asbeck ATDOI: 10.1038/s41598-021-02630-3
Torque control of maxillary anterior teeth with the double J retractor and palatal miniscrews during en masse retraction.The Angle orthodontist · 2022Liaw J, Huang G, Tsai FF et al.DOI: 10.2319/092621-725.1
Experimentally quantifying the feasible torque space of the human shoulder.Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology · 2022Baillargeon EM, Ludvig D, Sohn MH et al.DOI: 10.1016/j.jelekin.2019.05.014
Lower-Limb Joint Torque Prediction Using LSTM Neural Networks and Transfer Learning.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2022Zhang L, Soselia D, Wang R et al.DOI: 10.1109/TNSRE.2022.3156786
Rotations of F-ATPase and V-ATPase analyzed by a torque approach.Journal of biomolecular structure & dynamics · 2023Jitapunkul K, Zhao Y, Lawtrakul L et al.DOI: 10.1080/07391102.2022.2154847
Electrically elicited quadriceps muscle torque: Comparison at three knee angles.Physiotherapy theory and practice · 2021Scott W, Adams C, Fisher J et al.DOI: 10.1080/09593985.2019.1639867
Object-centered sensorimotor bias of torque control in the chronic stage following stroke.Scientific reports · 2022Schneider TR, Hermsdörfer JDOI: 10.1038/s41598-022-18754-z

via PubMed

Wikidata facts

Image: Koppel1.png

Show 1 more fact

Commons category: Torque

Sources (2)

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~22 min read

Article

21 sections

Contents

Historical terminology
Definition and relation to other physical quantities
Torque as a cross product between linear force and the radius about the rotational axis
Relationship with the angular momentum
Proof of the equivalence of definitions
Derivatives of torque
Relationship with power and energy
Proof
Principle of moments
Units
Conversion to other units
Derivation
Special cases and other facts
Moment arm formula
Static equilibrium
Net force versus torque
Machine torque
Torque multiplier
See also
References
External links

Torque is generally referred to using different vocabulary depending on geographical location and field of study, with torque generally being associated with physics and moment being associated with engineering. This article follows the definition used in US physics in its usage of the word torque.