Question

let's say you had a pulley system with a mechanical advantage of 3. If you want to lift a boulder 10 meters off the ground, how far would you have to pull the rope?
A. 3 meters B. 10 meters C. 30 meters D. 300 meters

Answer 1

mechanical advantage = distance over which the force is applied / distance over which the load is moved

A simple pulley has a mechanical advantage of 2 because you pull the rope 2 meters and the load rises 1 meter.