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प्रश्न
No work is done by a force if the body
पर्याय
moves in direction of force
does not move
moves in opposite direction
none of the these
उत्तर
does not move
APPEARS IN
संबंधित प्रश्न
Give reasons for the following. No work is done if a man is pushing against a wall.
1 J = ______ calorie.
A weight lifter lifted a load of 200 kgf to a height of 2.5 m in 5 s. Calculate:
- the work done, and
- the power developed by him. Take g = 10 N kg-1
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(i) the work done, and
(ii) the power developed by them.
MULTIPLE CHOICE TYPE
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