The frequency for a second's pendulum is:
Correct answer: C. 0.5 Hz
- A. 2 sec
- B. 2 min
- C. 0.5 Hz
- D. 2.5 sec
Explanation
A second's pendulum has a period of exactly 2 seconds. The frequency (f) of a pendulum is the reciprocal of its period (T), so the frequency is f=1/T =1/2seconds =0.5Hz.
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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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