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Q.

The energy of a simple harmonic oscillator in the state of rest is 3 J. If its mean kinetic energy is 4 J, its total energy will be in Joules.

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answer is 11.

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Detailed Solution

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Erest=3 Jmean K.E =14Ka2=4⇒12Ka2=8  JFrom (i) and (ii) Etotal=Erest+12Ka2           =3+8=11J

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The energy of a simple harmonic oscillator in the state of rest is 3 J. If its mean kinetic energy is 4 J, its total energy will be in Joules.