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Question

The FX curve is shown below. Find the change in potential energy when particle displaces from X=0 m to X=6 m (Assume SI units)

A
15 J
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B
30 J
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C
60 J
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D
7.5 J
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Solution

The correct option is C 60 J
From definition of change in potential energy:
F=dUdX
ΔU=F dX;

The change in potential energy when particle displaces from X=0 m to X=6 m is
U1U2=Area under F - X graph
=(10×6) J=60 J


Hence option C is the correct answer

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