Answer: Underdamped oscillation.
- A Underdamped oscillation
- B Overdamped oscillation
- C Critical damping
- D Forced oscillation
Correct answer: A. Underdamped oscillation
Explanation: Underdamped oscillation: the system still oscillates but with exponentially decreasing amplitude. ω_d = √(ω_0² - b²/4m²) is the damped frequency.
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.