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Question

Difference between the moment of force and torque


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Solution

Moment of forceTorque
  • The perpendicular distance between the force's line of action and the rotation's point is measured by moment of force.
  • Torque is the twisting and turning effect of the body.
  • The moment of force is a static force.
  • Torque is a moving force.
  • If there is no rotation, the moment is used.
  • When there is rotation, torque is used.
  • It's used in a non-rotating or bending item that's created under the impact of applied force.
  • This force is applied to objects with fixed or pivoting points and a rotational axis.
  • Formula for Moment of force is

μn=rnQ

Where, μn = moment

rn = distance to some point

Q = physical quantity such as a force applied at a point/a point mass/a point charge, and so on.

  • Formula For Torque is

T=rFsinθ,

Where, T = torque

r = radius

F = force

θ = angle between F and the lever arm.

  • SI unit of Moment is Newton-Meter.
  • SI unit of torque is Newton-Meter/revolution


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