The amplitude of oscillation of a simple pendulum bob diminishes slowly because
A
energy is applied by some external agencies
B
frictional forces dissipate the energy of motion
C
the frequency of oscillation increases with the mass of the bob
D
the frequency of oscillation varies with time
E
the period of oscillation varies with time.
Verified Correct Answer: D.
Physical Principles & Numerical Solution
The amplitude and the frequency of an oscillating pendulum decrease gradually with time.
Source: Myschool Past Questions Archive (Record #43040)