일반물리학 1 — Oscillations: Problem 35

35 A 5.00 kg object on a horizontal frictionless surface is attached to a spring with \(k = 1000 \text{ N/m}\). The object is displaced from equilibrium 40.0 cm horizontally and given an initial velocity of 10.0 m/s back toward the equilibrium position. What are (a) the motion’s frequency, (b) the initial potential energy of the block–spring system, (c) the initial kinetic energy, and (d) the motion’s amplitude?