Question

The rotational analogue of force is :

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Solution

Rational analogue: It is a force in a linear motion is torque.Formula to calculate rational analogue: $\stackrel{\to }{\tau }=\stackrel{\to }{r}×\stackrel{\to }{F}$where $\tau$ is the torque, $r$ is the radius of the rotatory motion, and $F$ is the force applied.Force is necessary for a body to do translational motion. Similarly, it is torque that is required to rotate a body. If net torque applied to the body about the axis of rotation is zero, then the body does not rotate.Hence, the rotational analogue of force is torque.

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