The time of open vibration of a simple pendulum may be decreased by:
Correct answer: B. Decreasing the length of the pendulum
- A. Increasing the length of the pendulum
- B. Decreasing the length of the pendulum
- C. Using a heavier bob
- D. Using a lighter bob
Explanation
The 'time of one vibration' of the simple pendulum can be decreased by decreasing the pendulum length. The period of simple pendulum is given by;T=,2π√l/g,So there is direction relation between time period and length of pendulum. Therefore in order to decrease the time period the length of pendulum is decreased.Time period has nothing to concern with mass so option C & D are not related to the given question.
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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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