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A 20 g particle is oscillating simple harmonically with a period of 2 second and maximum kinetic energy 2 J. The total mechanical energy of the particle is zero. Write the following — 

(a) Amplitude of oscillation

(b) Potential energy as a function of displacement x relative to mean position.

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(a) m = 20 g = 20 × 10–3 kg

T = 2s

Kmax = 2 J

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