Zaymiey

⚛️ Physics  ·  Oscillations  ·  NEET & JEE

The phase difference between displacement and velocity in SHM is:

Answer: π/2 rad.

  • A π/2 rad
  • B π rad
  • C 0
  • D 2π rad

Correct answer: A. π/2 rad

Explanation: x = A sin(ωt) and v = Aω cos(ωt) = Aω sin(ωt + π/2). Velocity leads displacement by 90° (π/2 rad).

Displacement, Velocity, Acceleration in SHMx(t)v(t)a(t)v leads x by 90°; a is exactly out of phase with x (a = −ω²x)

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.

Read the full Oscillations notes →