Question

Does the string that supports a pendulum bob do work on the bob as its swings to and fro? Does the force of gravity do any work on the bob?​

Answer 1

Answer:

Yes, gravity does work on the bob when the direction of motion is not perpendicular to the direction of the force of gravity.

Explanation:

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Answer 2

Answer:

a simple pendulam represent a S.H.M motion .

I'm which force of gravity represent no work on it