Question

A lever can reduce effort needed to raise an object by changing the direction of force.

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

Levers raise and lower an object as force is exerted upon the lever. A pulley is a wheel with a grooved rim that is used to reduce the amount of force and change the direction of force needed to do work. Pulleys are modified levers; their fulcrum is at their center.