A body performing SHM with displacement x=x 0sin(wt+Ⲫ),when t=0, x=x0..Then what is the phase angle of Ⲫ?
Correct answer: B. π/2
- A. π
- B. π/2
- C. π/4
- D. -π
Explanation
Inside the sin bracket we need π/2 to get us a 1 in order to satisfy the condition which is x=x0. Since t=0, we would have wt as zero as well so the value of fi must be π/2.
This question appeared on the UHS MDCAT 2017 paper, which you can sit online with every answer explained.
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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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