Lessons

Eamcet Physics
1 st Year : Unit 4.1( Work-Power And Energy ) - Work-Power And Energy

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Q.

A ladder 'AB' of weight 300N and length 5m is lying on a horizontal surface. Its centre of gravity is at a distance 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,

View Answer

Correct choice: B

Explanation:

W = 300 × 2 + (80×5) = 100J
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