A 025 Kg Harmonic Oscillator Has a Total Mechanical Energy Of Of 4.1

Multiple Choice

A 0.25 kg harmonic oscillator has a total mechanical energy of $4.1 \mathrm {~J}$ If the oscillation amplitude is $20.0 \mathrm {~cm}$ what is the oscillation frequency?

A) 4.6 Hz
B) 1.4 Hz
C) 2.3 Hz
D) 3.2 Hz