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If for a particle executing SHM, the equ...

If for a particle executing SHM, the equation of SHM is given as `y=acosomegat`. Then which of the following graphs represents the variation in potential energy?

A

II,IV

B

I,III

C

III,IV

D

I,II

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The correct Answer is:
B

The potential energy is maximum at extreme position (where `y= +-a`) and zero at mean position, so, graph I is correct.
Also, from `y=acosomegat`
`y=+-a ` at time t=0
hence, raph III is also correct.
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