Moderate

The time period of pendulum is measured to be 3.0 seconds in the inertial reference frame of the pendulum. What is the period when measured by an observer moving at the speed of 0.95 c relative to the pendulum

Correct answer: E. 9.6 s

  • A. 1.2 s
  • B. 3.4 s
  • C. 7.7 s
  • D. 8.1 s
  • E. 9.6 s

Explanation

We will use the concept of time dilation for this question. The calculations are given below

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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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