Question

State the law of moments.

Answer 1

For a body at some point the total clockwise moment is equal to the total anticlockwise moment when it is in equilibrium. Then in such a condition the body is said to be balanced according to the principle of moments. Thus the moment is also said to be the turning effect of force. Because here the forces are balanced.

Formula used:
Moment, $M=Force\times \bot dis\tan ce$
$\Rightarrow M=F\times d$
where, where, F - force and d - distance

Complete answer:
For a body at some point the total clockwise moment is equal to the total anticlockwise moment when it is in equilibrium. Then in such a condition the body is said to be balanced according to the principle of moments. Thus the moment is also said to be the turning effect of force. Because here the forces are balanced.
The torque is also an example for moment, because the turning effect of force itself produces a torque. And the resultant effect is the moment. The force and moment is always interconnected. When one of the magnitude increases the other also increases. That is, force and moment are directly proportional.

Note:
Moment and momentum are two different concepts. So don’t get confused with them. The moment is the turning effect of force. And momentum can be described as the product of mass and velocity. According to principle of moments at some point the total clockwise moment is equal to the total anticlockwise moment when it is in equilibrium. Then in such a condition the body is said to be balanced.