WAEC Physics 2020 Objective — Question 32
Question 32 of 50 from the West African Examinations Council (WAEC) Physics 2020 Objective paper, with the correct answer and a full explanation.
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Which of the following statements about the motion of a simple pendulum is true?
- A. It is a simple harmonic motion when the angle of displacement is large
- B. It passes the equilibrium position with minimum speed
- C. It possesses maximum kinetic energy at the extreme positions
- D. It swings faster at the poles than at the equatorCorrect
Explanation
Characteristics of Simple Harmonic Motion (SHM): It is SHM when the angle of displacement is small. It passes the equilibrium position with maximum speed and minimum speed at the extreme positions of oscillation. It possesses maximum kinetic energy and minimum P.E. at the centre, and maximum P.E. and minimum K.E. at the extreme positions. It swings faster at the poles than at the equator (equilibrium position).
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