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The work done by a force acting on a bod...

The work done by a force acting on a body is as shown in the graph. The total work done in covering an initial distance of 20 m is

A

225 J

B

200 J

C

400 J.

D

175 J

Text Solution

Verified by Experts

The correct Answer is:
B

Work done W = area under F - S graph
= area of trapezium ABCD = area of trapezium CEFD
`=1/2 xx (10 + 15) xx 10 + 1/2 xx (10+ 20) xx 5 = 125 + 75= 200 J`
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