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WAEC 2025

Which of the following will reduce the frequency of oscillation of a simple pendulum?

  1. AIncreasing the mass of the bob
  2. BDecreasing the length of the string
  3. CIncreasing the length of the string
  4. DDecreasing the mass of the bob.

Explanation

The frequency of oscillation of a simple pendulum is given by f = 1 / (2π) * √(g/L), which shows that frequency is inversely proportional to the square root of the string's length (L). Increasing the length of the string decreases the frequency.

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