STANDARDPhysics-Oscillations

STANDARD Physics Simple Harmonic Motion MCQ Question

Type: MCQ-conceptual-Medium-Class 11

If x, v and a represent the displacement, the velocity and the acceleration of a particle executing simple harmonic motion of time period T then which of the following does not change with time?

A

aTv\frac{aT}{v}

B

aT+2πvaT + 2\pi v

C

aTx\frac{aT}{x}

D

a2T+4π2v2a^2 T + 4\pi^2 v^2

Correct Answer

Option D

Detailed Explanation

In simple harmonic motion (SHM), the relationship between acceleration aa, velocity vv, and displacement xx is governed by the equations of motion, where a=ω2xa = -\omega^2 x and v=ωAsin(ωt+ϕ)v = \omega A \sin(\omega t + \phi), with ω=2πT\omega = \frac{2\pi}{T}. Option D, a2T+4π2v2a^2 T + 4\pi^2 v^2, simplifies to a constant value because a2a^2 and v2v^2 are both proportional to A2A^2 and do not change with time, thus making the entire expression time-independent.

In contrast, options A, B, and C involve terms that vary with time due to the periodic nature of SHM, as aa and vv fluctuate with the displacement xx over each cycle, leading to changes in the ratios and sums presented in those options.

Found an issue with this question?