WBCS.LIVE practice question

If a highly accurate pendulum clock is physically transported from the Earth's equator to the North Pole, how will its timekeeping be affected?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. It will run slow.
  2. It will stop completely.
  3. It will keep the exact same time.
  4. It will run fast.

Correct answer and explanation

Correct answer: It will run fast.

Explanation: āœ… Correct Answer: D) It will run fast. šŸ“š Explanation: The time period of a simple pendulum is inversely proportional to the square root of the acceleration due to gravity (T = 2Ļ€ āˆšl/g). Because the Earth is oblate, the value of gravity (g) is slightly higher at the poles than at the equator. A higher g decreases the time period, causing the pendulum to swing faster and the clock to gain time.