Angular speed for annual rotation of Earth in radian per day:
Correct answer: C. 2π/365 radian / day
- A. π/2 radian/day
- B. π radian / day
- C. 2π/365 radian / day
- D. 365 radian / day
Explanation
Angular speed of Earth's annual rotation can be calculated by dividing the total angle it rotates through in one year ( 360 degrees or 2pi radians) by the number of days in a year. Angular speed = (2π radians) / (365.25 days) ≈ 0.017214 radians per day
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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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