A particle moves in a circle of radius 25 cm at two revolutions per second. The acceleration of the particle in m/s2 is
Correct answer: C. 4π2
- A. π2
- B. 8π2
- C. 4π2
- D. 2π2
Explanation
a_c = rω2 = 0.25x (2x 2π)2 a_c = 4π^2 rads-2
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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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