Question

Solve the following numerical :-
1. A boy opens a nut by applying a force of 145 N using a wrench of a length 60 cm.
If he wants to open it by a force of 30 N, what should be the length of the wrench?

Answer 1

Answer:

Given,

F1 = 150N

l1 = 0.4m

F2 = 60N

l2 = ?

∵ Force × perpendicular distance = constant

F1 × l1 = F2 × l2

150 × 0.4 = 60 × l2

l2 = 1m