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The work done against friction in moving...

The work done against friction in moving a body from A to B is 200 J. If the body is again brought back to A along the same path, the total work done for the trip against friction is

A

0 J

B

400 J

C

200 J

D

800 J

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The correct Answer is:
B
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AAKASH SERIES-WORK, POWER & ENERGY -PRACTICE EXERCISE (WORK)
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  6. A uniform rope of length .L. and linear density .mu. is on a smooth ho...

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  7. One - fourth chain is hanging down from a table. Work done to bring th...

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  8. A person of mass 50 kg carrying a box walks up a staircase. The height...

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  9. A rectangular block of dimensions 10m xx 6m xx 3m is lying on a horizo...

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  10. With the application of a force of 20N, the momentum of a body of mass...

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  11. A uniform rod of mass 2kg. And length 1m is lying on a horizontal surf...

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  12. A ladder .AB. of weight 300 N and length 5 m is lying on a horizontal ...

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  13. The force - displacement graph is shown in the figure. The work done i...

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  14. A constant force is applied on a 10kg mass at rest. The ratio of works...

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  15. A body of mass 12 kg is at the bottom of a lake of depth 5 m. If the w...

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