Question

Write the expression for the moment of force about a given axis of rotation.

Answer 1

1. The moment of a force about a given axis is defined as the product of the magnitude of force applied and the perpendicular distance of the line of action of the force from the axis of rotation.
2. $\mathrm{Moment}\mathrm{of}\mathrm{force}=\mathrm{Force}\times \mathrm{Perpendicular}\mathrm{distance}\mathrm{of}\mathrm{force}\mathrm{from}\mathrm{the}\mathrm{axis}\mathrm{of}\mathrm{rotation}.$
3. This force is called Torque.
4. The unit of torque is $N.m$