Question

A crowbar is used to lift a load of 1200 N by placing it at a distance of 25 cm from the fulcrum.

the force required at 60 cm from the fulcrum to balance the load.

Answer 1

500 N

Step-by-step explanation:

From the question,

Sum of clockwise moment = sum of anti clockwise moment.

F×d = F'×d'.................. Equation 1

Where F = Force applied to lift the load, d = distance, F' = Force required, d' = distance of the required force from the fulcrum

Make F' the subject of the equation

F' = F×d/d'.................. Equation 2

Given: F = 1200 N, d = 25 cm, d' = 60cm.

Substitute these values into equation 2

F' = 1200×25/60

F' = 500 N.

Hence the force required to balance the load is 500 N