Question

9. State one way to obtain a greater moment of a force
about a given axis of rotation.
​

Answer 1

Moment of force is also called Torque represented by $\tau$ .

It can be defined as the product of force and perpendicular distance between the line of force and axis of rotation .

Torque = Force × Perpendicular distance

In vector form ,

$\tt \vec{\tau} = \vec{r}\times \vec{f}$

The moment of force , hence , becomes directly proportional to the force and perpendicular distance .

Therefore , to increase moment of force , following of the two could be done :

1) The magnitude of the force could be made larger .

2) The distance between axis of rotation and line of force could be increased .

SI unit of torque is Nm .