Question

The displacement of a particle is represented by the equation y = $3\cos\bigg \lgroup \frac{\pi}{4}-2\omega t\bigg \rgroup$. The motion of the particle is
(a) simple harmonic with period 2π/ω
(b) simple harmonic with period π/ω
(c) periodic but not simple harmonic
(d) non-periodic

Answer 1

$<b>$

Option A is correct

Answer 2

The displacement of a particle is represented by the equation y = $3\cos\bigg \lgroup \frac{\pi}{4}-2\omega t\bigg \rgroup$. The motion of the particle is simple harmonic with period 2π/ω