Question

A boy opens a nut by applying a force of 120 N using a wrench of length 60 cm. Find the moment of force required.

Answer 1

Answer:

moment of force= force x lever arm

=120+.60 = 72 Nm

Answer 2

Answer

Moment of force = 72 N-m

Given

A boy opens a nut by applying a force of 120 N using a wrench of length 60 cm

To Find

Moment of force

Solution

Force , F = 120 N

Radius , r = 60 cm = 0.6 m [ Perpendicular distance ]

We know that , " Moment of force is defined as product of force and radius "

⇒ τ = Fr

⇒ τ = 120 × 0.6

⇒ τ = 12 × 6

⇒ τ = 72 N-m

So , moment of force required is 72 N-m