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October 25, 2014

Homework Help: Physics

Posted by James on Monday, July 9, 2012 at 9:00pm.

A 3-kg mass attached to a spring with k = 145 N/m is oscillating in a vat of oil, which damps the oscillations.

(a) If the damping constant of the oil is b = 14 kg/s, how long will it take the amplitude of the oscillations to decrease to 1% of its original value?
(b) What should the damping constant be to reduce the amplitude of the oscillations by 91% in 4 s?

The answers are 1.97s and 3.61 kg/s. How can I find these answers? Thank you in advance.

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