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प्रश्न
In the following case write yes, if the work is being done and no if no work is being done.
A man trying to push a wall.
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उत्तर
No.
संबंधित प्रश्न
Give the expression for mechanical advantage of an inclined plane in terms of the length of an inclined plane.
Name the quality which is measured in eV
What do you mean by uniform circular motion?
What is a centripetal force?
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°.
An engine does 54,000 J of work by exerting a force of 6000 N on it. What is the displacement in the direction of the force?
How is 1 kgf related to the SI unit of force?
State the condition when the work done by the force is negative.
A man raises a box of mass 50 kg to a height of 2 m in 20 s, while another man raises the same box to the same height in 50 s. Compare:
- the work done, and
- the power developed by them. Take g = 10 N kg-1
