Question

A ramp 20 m long and 4 m high is used to lift a heavy box. A pulley system with 4 rope sections supporting the load is used to lift an identical box to a height of 4 m. If friction is ignored, the ramp requires a _____ to lift the load.

a)greater input distance and a greater force

b)smaller input distance and a greater force

c)smaller input distance and a smaller force

d)greater input distance and a smaller force

Answer 1

The correct option is d)greater input distance and a smaller force

Why?

We must remember that while a pulley has more rope sections, the force requiered to lift the load will be smaller, but the input distance required to lift the load will be greater.

Hence, for the problem, the correct option is d)greater input distance and a smaller force.

Have a nice day!