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A weight lifter lifts a weight off the g...

A weight lifter lifts a weight off the ground and holds is up, then

A

Work done in lifting as well as holding the weight

B

No work is done in both lifting and holding he weight

C

Work is done in lifting the weight but no work is required to be done in holding it up

D

No work is done in lifting the weight but work is required to be done in holding it up

Text Solution

Verified by Experts

The correct Answer is:
D
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NARAYNA-WORK , ENERGY & POWER -C.U.Q
  1. If the amount of work done by a force depends only on the initial and ...

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  2. In which of the following, the work done by the mentioned force is neg...

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  3. A weight lifter lifts a weight off the ground and holds is up, then

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  4. A man pushes a wall and fails to displace it.He does

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  5. A bucket full of water is drawn up by a person. In this case the work ...

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  6. A man is rowing a boat upstream and inspite of that the boat is found ...

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  7. A ball is thrown vertically upwards from the ground. Work done by air ...

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  8. An agent is moving a positively charged body towards another fixed pos...

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  9. Work done by the force of friction

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  10. The slope of the kinetic energy versus position vector curve gives the...

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  11. Which of the following statement is correct?

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  12. The change in kinetic energy per unit 'space' (distance) is equal to

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  13. When the momentum of a body a doubled, the kinetic energy is

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  14. For the same kinetic energy, the momentum shall be maximum for which o...

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  15. If the momentum of a particle is plotted on X-axis and its kinetic ene...

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  16. When two identical balls are moving with equal speed in opposite direc...

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  17. The product of linear momentum and velocity of a blood represents.

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  18. The KE of a freely falling body

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  19. Consider the following two statements: A. Linear momentum of a syste...

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  20. Internal forces can change

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