Question

The figure alongside shows a rigid body, capable of turning around point O.

If a force F, acts at point A, the moment of force of F around O is :

Options

• F × OA

• F × OA₁

• F × OA₂

• any of these

Answer 1

F × OA₁

Explanation:

The moment of a force equals the force multiplied by the perpendicular distance from the turning point to its line of action. Here, OA₁ is that perpendicular distance.