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Question

For the particle executing SHM the displacement x is given by x=Acosωt. Identify which represents variation of potential energy as a function of time t and displacement x

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A
I,III
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B
II,IV
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C
II,III
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D
I,IV
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Solution

The correct option is A I,III
Displacement of the particle is given as x=Acoswt
Potential energy U=12kx2
Thus U Vs x graph is an upward parabola as represented by III
Also U=12kx2=12kA2cos2wt
Hence, I represents the variation of potential energy as a function of time.

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