FORCE part 3

Moment of force is defined as ..............

in term of F (force) and d (distance)

• Moment = F/d

• Moment = Fxd

• Moment = F+d

• Moment = F-/d

The SI unit for moment of force is

• N/m

• N/m²

• Nm

• Nm²

Two types of moment force are

• Clockwise and Anti-clockwise

• Stable and Unstable

• Vertical and Horizontal

• Forward and Backward

Moment is also known as

• action of torque

• action of moment

• action of force

• turning effect

The principle of moments states that when in equilibrium

• sum of clockwise moments is more than with the sum of anti-clockwise moments

• sum of clockwise moments is less than with the sum of anti-clockwise moments

• sum of clockwise moments is equal with the sum of anti-clockwise moments

• sum of horizontal force is equal with the sum of vertical force

Moment of force is 6 Nm and the distance of pivot is 2 m, force applied would be

• 4N

• 5N

• 3N

• 2N

Force applied by and object is 4 N and the moment of force is 24 Nm, the distance of pivot would be

• 28 m

• 6 m

• 48 m

• 20 m

The diagram shows a boy of weight 500 N sitting on a see-saw. He sits 2.0 m from the pivot. What is the force F needed to balance the see-saw?

• 250 N

• 750 N

• 1000 N

• 3000 N

A boy of weighing 600 N sits the see-saw at a distance of 1.5 m from the pivot. What is the force F required at the other end to balance the see-saw?

• 250 N

• 350 N

• 450 N

• 550 N

The diagram shows a uniform rod balance at its center. Use the principle of moments to calculate the weight, W.

• 25 N

• 75 N

• 65 N

• 50 N