Which one of the following is conserved when the torque acting on a system is zero?
Correct answer: B. Angular momentum
- A. K.E
- B. Angular momentum
- C. Rotational K.E
- D. Linear momentum
Explanation
Angular momentum is conserved when the torque acting on a system is zero. If the net torque is zero, the angular momentum of the system is conserved according to the principle of conservation of angular 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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