Part of a simple harmonic motion is graphed in the figure, where y is the displacement from the mean position. The correct equation describing this SHM is :-

Question

G1 Physics · Accepted Answer

From the graph, amplitude is 2 cm. The time markings give angular frequency ω=10/3 rad s⁻¹. At the chosen origin the particle is at the negative extreme, so the sine-form phase is -π/2. Hence y=2 sin[(10/3)t-π/2]. Correct answer: A.