Question

what is pulley define the most important thing​

Answer 1

Answer:

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a wheel with a grooved rim in which a rope, chain, or belt can run in order to change the direction or point of application of a force applied to the rope, etc. a number of such wheels pivoted in parallel in a block, used to raise heavy loads.

Answer 2

Step-by-step explanation:

A pulley is a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim. Pulleys are used singly or in combination to transmit energy and motion