Question

Can the moment of force be zero even if the force is not zero.
Give reason for the answer.

Answer 1

Moment of force can be zero when the perpendicular distance of the line of action of force from the axis of rotation is zero even when the force is zero.As moment of force=fforceperpendicular distance of the line of action of force

Answer 2

Answer:

Yes, the moment of force can be zero even if the force is not zero.

Explanation:

As we know, the formula for moment of force is,

Moments of a force = F x d

where F denotes Force

d denotes distance.

Now if the force is not zero i.e. F ≠ 0

But moment of force should be zero and for it, d=0

• if d is equal to zero it implies the line of action of the force passes through the axis of rotation.  
• When a force is applied at the CG of a balanced rod, no rotation occurs although the force is acting.  This is because the line of action of the force passes through the axis of rotation.
• It gives us the conclusion that moment of force can be zero only when the force doesn't produce any rotational displacement having a non-zero value.

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