A force F acting on an object varies with distance x as shown here. The force is in newton and x in metre. The work done by the force in moving the object from x = 0 to x = 6m is
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a
4.5 J
b
13.5 J
c
9.0 J
d
18.0 J
answer is B.
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Detailed Solution
Work done = Area enclosed by F – x graph =12×(3+6)×3=13.5 J
A force F acting on an object varies with distance x as shown here. The force is in newton and x in metre. The work done by the force in moving the object from x = 0 to x = 6m is