Answer: 3.
- A 1/3
- B 1
- C 3
- D 4
Correct answer: C. 3
Explanation: PE ∝ x² = E/4, KE = 3E/4, so KE/PE = 3.
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.