Which simple machine is a rotating wheel with a grooved rim used to lift loads with a rope or cable?

Explanation

A pulley is a simple machine consisting of a wheel with a grooved rim that a rope or cable runs along, used to change the direction of force or reduce the effort needed to lift heavy objects. Multiple pulleys used together, called a block and tackle, can multiply the lifting force significantly. Elevators, cranes, and flagpoles commonly rely on pulley systems. Explore more Everyday Science MCQs on mcqstutor to keep practicing.