Q. The phase difference between the instantaneous velocity and acceleration of a particle executing simple harmonic motion is
A) π
B) 0.707 π
C) zero
D) 0.5 π
Explanation
[Solution from source] If x = A sin ωt, then v = Aω cos ωt and a = −Aω² sin ωt, so acceleration leads velocity by π/2 = 0.5π. A phase difference of π exists between displacement and acceleration, not velocity and acceleration. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.