Q: A pulley is a simple machine that consists of a grooved wheel and?


Read this paragraph and choose the correct option from the provided answers:

Another simple machine that uses a wheel is the pulley. A pulley is a simple machine that consists of a rope and grooved wheel. The rope fits into the groove in the wheel, and pulling on the rope turns the wheel. Figure below shows two common uses of pulleys.

 Choices:

- a battery

- a wedge

- a lever

- a rope


A:
a rope