Work Energy And Power Ques 37
37. 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
[2011]
(a) $18 $ $J$
(b) $21 $ $J$
(c) $26 $ $J$
(d) $13 $ $J$
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Answer:
Correct Answer: 37.(d)
Solution:
- (d) Work done = area under F-d graph
$ =[2 \times(7-3)]+[\frac{1}{2} \times 2 \times(12-7)] $
$= 8+5$
$ = 13$ $J$
BETA
