The angular speed in radian/hour for the daily rotation of the earth is:
Correct answer: D. π/12
- A. 2π
- B. π/6
- C. 4π
- D. π/12
Explanation
Angular velocity for one complete rotation (Earth completes one complete rotation in 24 hours) θ = 360 = 2π ω = θ/t = 2π/24 = π/12
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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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