Pulley
A pulley is a wheel with a groove round its edge that a rope runs in. With one pulley fixed at the top, you pull down on the rope and the load goes up: the pulley changes the direction of your pull, so you can lift with your whole body's weight. Pulleys raise flags, curtains and buckets from wells. Builders and cranes use several pulleys together, which lets a smaller pull lift a heavy load.
Depth 1 · Foundation
You know that a pulley is a grooved wheel with a rope over it, that a fixed pulley lets you pull down to lift a load up, and where pulleys are used.
Sign in to prove what you know with a short quiz, see how deep you've gone, and earn XP for it.
Sign in with GoogleDepths of understanding
- 1
Foundation
You know that a pulley is a grooved wheel with a rope over it, that a fixed pulley lets you pull down to lift a load up, and where pulleys are used.
Your path here
What's still between you and Pulley, depth 1, in the order you can learn it.