Question

what is meant by "no work" force? give examples
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Answer 1

Answer:

There are many important examples of forces which do no work because they act perpendicular to the motion. For circular motion, the centripetal force always acts at right angles to the motion. It changes the direction of the motion, but it does no work on the object. This can be applied to any circular orbit.

Explanation:

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Answer 2

Answer:

There are many important example of force which do not work because they act prependicular to the motion. for circular motion the centripetal force always act at right angle to the motions .its change the direction of the motion, but it does not work on the object .This can be applied to any circular orbit.