Question

A particle executes SHM with frequency f, what is frequency of oscillation of potential energy?

• A. f/2
• B. f
• C. 2f
• D. 1.5 f

Answer 1

Answer: (C)

2f

Answer 2

U = $\frac{1}{2}$mω²x² = $\frac{1}{2}$mω² A² sin² (ωt + α), sin² (ωt + α) is eriodic function with period π/ω i.e frequency ω/π

= $\frac{2\omega}{2\pi}$ = 2f.