Question

What is torque?

Answer 1

Torque is the rotational analogue of force. It is the equivalent of force which makes a body rotate about some axis.

Explanation:

As you may see, it's the equivalent of force which makes the nut rotate about it's axis.

Mathematically, Torque, `tau = r*F*Sin theta`, where `r` is the length of the rotating arm, `F` is the force and `theta` is the angle between the two.

Torque is a vector, i.e. it has a direction associated with it. It is the cross product of vectors `vec r` and `vec F`.

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