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प्रश्न
When does a force do work?
उत्तर
A force does work whenever there is a displacement in the direction of force applied.
संबंधित प्रश्न
A stone of mass m is rotated in a circular path with a uniform speed by tying a strong string with the help of your hand. Answer the following questions
1) Is the stone moving with a uniform or variable speed?
2) Is the stone moving with a uniform acceleration? In which direction does the acceleration act?
3) What kind of force acts on the hand and state its direction?
How is work done by a force measured when the force is in the direction of displacement?
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In which one of the following cases is the work done more? When the angle between the direction of motion and that of the force is (i) 90° (ii) 0°.
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How much force is applied on a body when 150 J of work is done in displacing the body through a distance of 10 m in the direction of the force?
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Define 1 kgf., How is it related to the S.I. unit of force?
What is the work done by the gravitational force on the moon that revolves around the earth?
