Answer: 100.
- A 100
- B 10
- C 1000
- D 0.01
Correct answer: A. 100
Explanation: Q = f<sub>0</sub>/Δf = 1000/10 = 100. A Q of 100 means the system rings for about 100 cycles before the amplitude drops significantly.
In SHM, displacement and velocity are 90° out of phase (v is maximum when x=0, and zero when x is extreme), while acceleration is always exactly opposite in sign to displacement, consistent with a = −ω²x.
Concept context
Simple harmonic motion, spring-mass, pendulum, energy in SHM, and resonance.