A pendulum is made by attaching a 4.00 kg mass to the end of a thin, 75.0 cm long, massless rod. The period of (small amplitude) oscillations of the pendulum is
A) 2.45 sec.
B) 2.01 sec.
C) 1.74 sec.
D) 1.33 sec.
E) 1.04 sec.

Question

Quizplus · Accepted Answer

The period of a simple pendulum is given by T=2π√(L/g), where L is the length of the pendulum and g is the acceleration due to gravity. Plugging in the given values, we get:
T=2π√(0.75 m/9.81 m/s^2)
T = 1.738 seconds
Therefore, the best choice is C, which is closest to our calculated value of 1.738 seconds.

A Pendulum Is Made by Attaching a 4