Question

A toy is acted upon by a force. State two conditions under which work done is zero
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Answer 1

Answer:

1. When there is no force or no displacement.. or the direction of displacement is perpendicular to the direction of force then the work done is zero. 2. When the displacement is zero OR when the force acts at right angles to the direction of the displacement then the work done is zero.

Explanation:

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Answer 2

A toy is acted upon by a force:

Two conditions under which work done is zero:

1: The forced acted upon the toy at 90° ( perpendicular to the surface on which the toy is present )

2: Force is not adequate to move the toy ( displacement of toy = 0 )