The variation of the potential energy of harmonic oscillator is as shown in the figure. The spring constant is

Question

The variation of the potential energy of harmonic oscillator is as shown in the figure. The spring constant is, 1 × 10 2 N m - 1, 150 N m - 1, 66 . 7 N m - 1, 3 × 10 2 N m - 1

MARKS App · Accepted Answer

Total potential energy = 0.04 J Resting potential energy = 0.01 J Maximum kinetic energy = 0.04 - 0.01 = 0.03 J ∴ 0.03 J = 1 2 m ω 2 A 2 = 1 2 k A 2 ∴ 0.03 = 1 2 × k × 20 1000 2 ∴ k = 0.06 × 2500 N m - 1 = 150 N m - 1

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