For a simple pendulu,m the restoring force is caused by________________?
Correct answer: A. Gravity
- A. Gravity
- B. Spring
- C. Hand
- D. All of these
Explanation
For a simple pendulum, the component of the bob's weight tangential to the path pulls it back toward the mean position and acts as the restoring force. The string tension is directed along the string and does not provide this tangential restoring component. Students may choose d by treating every force present as the restoring force.
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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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