Question 21
Original source text (the exact panel preserves diagram labels, tables and choices):
Mary is investigating the factors affecting the period of a simple pendulum
(assuming the string/rod has negligible mass and air resistance is ignored). She
sets up two pendulums:
Pendulum Length Mass of bob
X 2.00 m 200 g
Y 0.50 m 400 g
She displaces both bobs by the same small angle and releases them
simultaneously. Which of the following observations will Mary MOST LIKELY
make about the motions of the two pendulums?
A. The period of Pendulum X is exactly twice the period of Pendulum Y.
B. The period of oscillation is the same for both pendulums because they
were released together.
C. Pendulum Y will have a greater period because its bob is heavier.
D. The frequency of Pendulum X is four times the frequency of Pendulum Y.
Mary is investigating the factors affecting the period of a simple pendulum
(assuming the string/rod has negligible mass and air resistance is ignored). She
sets up two pendulums:
Pendulum Length Mass of bob
X 2.00 m 200 g
Y 0.50 m 400 g
She displaces both bobs by the same small angle and releases them
simultaneously. Which of the following observations will Mary MOST LIKELY
make about the motions of the two pendulums?
A. The period of Pendulum X is exactly twice the period of Pendulum Y.
B. The period of oscillation is the same for both pendulums because they
were released together.
C. Pendulum Y will have a greater period because its bob is heavier.
D. The frequency of Pendulum X is four times the frequency of Pendulum Y.