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9. Which simple machine is used in a variety of ways to lift loads, apply forces, and to transmit power?A LeverB. PulleyC. WedgeD. Screw​.

Sagot :

Robeautyidn

Question:

Which simple machine is used in a variety of ways to lift loads, apply forces, and to transmit power?

Answer:

B. Pulley

Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power, but the simplest of pulleys serves only to reverse the direction of the effort force. It consists of a single pulley attached directly to a non-moving surface with a rope or cable through it.

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