Question

A pendulum with a period of 1.8 s on Earth is moved to another planet. On the new planet, its period is 2.5 s. What can you conclude about this new planet?

• A. The force of gravity on the new planet is less than it is on Earth.
• B. The force of gravity on the new planet is the same as it is on Earth.
• C. The force of gravity on the new planet is greater than it is on Earth.
• D. Insufficient data.

Answer 1

The correct option is A

The force of gravity on the new planet is less than it is on Earth.

The period of a pendulum is inversely related to the acceleration due to gravity. Therefore, if the period of the given pendulum increases, it must be due to a decrease in the force of gravity.