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The work done in pulling up a block of w...

The work done in pulling up a block of wood weighing 2 kN for a length of 10 m on a smooth plane inclined at an angle of 15° with the horizontal is

A

4.36 kJ

B

5.17 kJ

C

8.91 kJ

D

9.82 kJ

Text Solution

Verified by Experts

The correct Answer is:
B
`W = mg sin theta xx S`
`= 2 xx10^3 xx sin 15 xx10 = 5.17kJ`
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