A rod rests on frictionless ice. Forces that are equal in magnitude and opposite in direction are then simultaneously applied to their ends as shown. The quantity that vanishes is its:
Correct answer: B. total linear momentum
- A. angular momentum
- B. total linear momentum
- C. Angular acceleration
- D. Kinetic energy
Explanation
Two equal but opposite forces at different line of action form a couple. Couple produces the all angular quantities given in the question except linear momentum.
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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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