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A linear harmonic oscillator of force constant 2×10^6 N/m and amplitude 0.01m has a total mechanical energy of 160J. Its ___________

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A linear harmonic oscillator of force constant 2×10^6 N/m and amplitude 0.01m has a total mechanical energy of 160J. Its ___________

(a) Potential energy is 160 J

(b) Potential energy is zero

(c) Potential energy is 100J

(d) Potential energy is 120J
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Right answer is (c) Potential energy is 100J

Easy explanation: Potential energy = 1/2×kx^2

=1/2×2×10^6×0.01^2=100J.
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