Question

A crowbar of length 10m has fulcrum at a distance of 4m from one end . calculate the effort required to lift a load of 120N

Answer 1

Answer:

80N

Explanation:

distance of fulcrum from one end = 4 m

Total length = 10 m

Load = 120 N

distance of fulcrum from other end =

10 - 4 = 6 m

Load x load arm = Effort x effort arm

120 x 4 = Effort x 6

(120 x 4)/ 6 = Effort

Effort = 80 N