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A ladder .AB. of weight 300 N and length...

A ladder .AB. of weight 300 N and length 5 m is lying on a horizontal surface. Its centre of gravity is at a distane of .2m. from end A.A weight of 80N is attached at end B. The work done in raising the ladder to the vertical position with end .A. in contact with the ground is,

A

190J

B

250J

C

285J

D

475J

Text Solution

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The correct Answer is:
B
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