Question

a body
is acted upon by a force.state two conditions when the work done is zero

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Answer 1

Explanation:

1. when when there is no displacement of the body on which the force is applied.
2. when there is an angle of 90 degree with the force and the displacement.

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Answer 2

Answer:

• when the force is equally applied the work done is zero
• and when the force is not applied then work done is zero