(II) A 0.25-kg mass at the end of a spring oscillates 3.2 times per second with an amplitude of 0.15 m. Determine
(d) the equation describing the motion of the mass, assuming that at t = 0, 𝓍 was a maximum.
![](/channels/images/assetPage/verifiedSolution.png)
(II) A 0.25-kg mass at the end of a spring oscillates 3.2 times per second with an amplitude of 0.15 m. Determine
(d) the equation describing the motion of the mass, assuming that at t = 0, 𝓍 was a maximum.