When the bob of a simple pendulum is at the mean position during oscillation, its kinetic energy will
Correct answer: C. Be maximum.
- A. Be zero.
- B. Be minimum.
- C. Be maximum.
- D. Remain constant.
Explanation
In the oscillation of a simple pendulum, energy is continuously exchanged between kinetic and potential forms. At the mean position, the pendulum is at its lowest potential energy, and its speed is at its highest, resulting in maximum kinetic energy. Conversely, at the extreme positions, the pendulum momentarily pauses, making its kinetic energy zero and potential energy maximum. Therefore, Options A and B are incorrect as they misrepresent the kinetic energy at the mean position. Option D is incorrect because the kinetic energy fluctuates during oscillation and is not constant.
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About Simple Harmonic Motion
Simple harmonic motion is oscillation in which acceleration is directly proportional to displacement and directed toward the equilibrium position. Work includes displacement, velocity, acceleration, phase, period, frequency, amplitude and energy, with applications to springs and simple pendulums. The restoring force and the conditions for SHM distinguish it from general periodic motion.
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