The potential energy of a harmonic oscillator of mass 2 kg in its mean positioin is 5J. If its total energy is 9J and its amplitude is 0.01m, its period will be

Options

A. `(pi)/(10)s`
B. `(pi)/(20)`s
C. `(pi)/(50)s`
D. `(pi)/(100)s`

Answer

D

Explanation

`(1)/(2)mv_(max)^2=9-5=4`
or `mv_(max)^2=8`
or `2v_(max)^2=8`
or `v_(max)=2(m)/(s)=Aomega`
`omega=(v_(max))/(A)=(2)/(0.01)=200`
or `(2pi)/(T)=200`
`T=(2pi)/(200)=(pi)/(100)`