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A uniform chain of length 2 m is kept on...

A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the tale. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on to the tabl? `(g=10m//s^(2))`

A

7.2 J

B

3.6 J

C

120 J

D

1200 J

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-WORK POWER ENERGY-EXERCISE - 2
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  8. A uniform rod of length 2m and mass 5kg is lying on a horizontal surfa...

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

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  10. Force acting on a particle is (2hati+3hatj)N. Work done by the force i...

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  11. A force of (4x^(2)+3x)N acts on a particle which displaces it from x=2...

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  12. Velocity -time graph of a particle of mass 2 kg moving in a straight l...

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  13. A force of 5N is applied on a 20 Kg mass at rest. The work doen in the...

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  14. A body moves a distance of 20 m along a striaght line under the action...

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  15. The work done in lifting a body of mass 20 kg and specific gravity 3.2...

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  16. The work done in carrying a body from A to B is 20 J and from B to C i...

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  17. A particle of mass 0.1 kg is subjected to a force which varies with d...

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  18. A uniform metre scale of mass 2kg is suspended from on end. If it is d...

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  19. Two sopheres whose radii are in the ratio 1:2 are moving with theier v...

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  20. A river of salty water is flowling with a velocity 2 m/sec. If the den...

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