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A 50g hard-boiled egg oscillates on a spring with force constant 25N/m. A damping force F=-bv acts on the egg. The amplitude of oscillations decreases from 0.3m to 0.1m in 5s.

A) Calculate the magnitude of the damping constant b

B) By how much does the total mechanical energy of the oscillation decrease after the amplitude decreases to 1/3 of its initial value?

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