Question

Figure shows two forces acting at points A and B of a rod pivoted at a point O, such that OА = 2 m and OB = 4 m.

Total moment of the forces about O is:

Options

• 2 N m (clockwise)

• 2 N m (anticlockwise)

• 22 N m (clockwise) 

• 22 N m (anticlockwise)

Answer 1

2 Nm (clockwise)

Explanation:

Anticlockwise moment: 10 N m

Clockwise moment: 12 N m

∴ Resultant moment = 12 − 10

= 2 N 

Since the clockwise moment is greater,

2 N m clockwise