Q .     The amplitude of a simple pendulum is `10\ cm`. When the pendulum is at a displacement of `4\ cm` from the mean position, the ratio of kinetic and potential energies at the that point is:

EAMCET 2015
A

`5.25`

B

`2.5`

C

`4.5`

D

`7.5`

HINT

`\ frac{K.E}{P.E}=\ frac{\ frac{1}{2}momega^2(A^2-x^2)}{\ frac{1}{2}momega^2x^2}`

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