The following diagram shows a pendulum at different positions. Which one of the following statement is <strong>true</strong>?
- A. The pendulum has minimum potential energy at positions P and T.
- B. The pendulum has minimum potential energy at positions Q and S.
- C. The pendulum has minimum potential energy at position R. ✓
- D. The pendulum has same potential energy at all positions.
Correct Answer: C. The pendulum has minimum potential energy at position R.
Explanation
In a simple pendulum, the potential energy is minimum at its lowest point (mean position, R) and maximum at its extreme positions (P and T) where kinetic energy is zero.
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