Total distance travelled by a bob of the simple pendulum in one vibration is equal to________________?
Correct answer: D. 4 x amplitude
- A. Amplitude
- B. Square of the amplitude
- C. 2 x amplitude
- D. 4 x amplitude
Explanation
In one complete vibration, the bob travels from one extreme to the other, a distance 2A, and then returns, another 2A. Therefore the total distance is 2A + 2A = 4A. Students may choose 2 x amplitude by counting only the journey from one extreme to the other.
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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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