Question

Cranes make use of movable pulleys​

Answer 1

Answer:

Well almost all cranes use pulleys, but the most common application of pulleys in cranes occur in jib cranes. Jib cranes have wires that wrap around pulleys and the load. The more you wrap the wires through the two, the higher the lifting capacity.

Answer 2

Answer:

Many weight lifting machines have movable pulley as it allows the worker to lift the weight effortlessly. The same fact is applied on cranes.