Force F on a particle moving in a straight line varies with distance d as shown in the figure. The work done on the particle during its displacement of 12 m is
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a
21 J
b
26 J
c
13 J
d
18 J
answer is C.
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Detailed Solution
Work done = Area under (,F - x) graph = 2×(7-3)+12×2×(12-7) = 8+12×10 = 8 + 6 = 13 J
Force F on a particle moving in a straight line varies with distance d as shown in the figure. The work done on the particle during its displacement of 12 m is