A slow-running pendulum clock can be speeded up by_______________?
Correct answer: C. Reducing the length of the rod
- A. Increasing the length of the rod
- B. Increasing the weight of the bob
- C. Reducing the length of the rod
- D. Reducing the weight of the bob
Explanation
A pendulum's period increases with the square root of its length, so shortening the rod makes each swing quicker and speeds up the clock. The bob's weight does not determine the period.
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