A particle of mass m m\,m is oscillating with simple harmonic motion. The frequency of the oscillation is f f\,f and the amplitude is AAA.
What is the maximum kinetic energy of the particle?
12π2mf2A2\frac{1}{2} \pi^2 m f^2 A^221π2mf2A2
π2mf2A2\pi^2 m f^2 A^2π2mf2A2
2π2mf2A22\pi^2 m f^2 A^22π2mf2A2
4π2mf2A24\pi^2 m f^2 A^24π2mf2A2