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Question

Physics Question on potential energy

The unit of potential energy is

A

g cm s−2g\,cm\,s^{-2}

B

g cm2 s−2g\,cm^2\,s^{-2}

C

g cm2 s−1g\,cm^2\,s^{-1}

D

g cm s−1g\,cm\,s^{-1}

Answer

g cm2 s−2g\,cm^2\,s^{-2}

Explanation

Solution

Potential energy =mgh=g(cms2)cm=g(cms)2=mgh=g\left(\frac{cm}{s^{2}}\right)cm=g\left(\frac{cm}{s}\right)^{2}