A particle of mass m undergoes harmonic oscillation with period T0. A force f proportional to the speed v of the particle, f = −bv, is introduced. If the particle continues to oscillate, the period with f acting is
A. Larger than T0
B. Smaller than T0
C. Independent of b
D. Dependent linearly on b
E. Constantly changing
(GR9677 #08)
f = −bv → minus sign means f is restoring force (damped oscillation).
The oscillation is getting slower (larger period) before it finally comes to stop.
Answer: A
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