1. The problem statement, all variables and given/known data A 2.00 kg mass vibrates according to the equation x = 0.470 cos 8.36t, where x is in meters, and t is in seconds. Assume that x = 0.29 m. (a) Determine the amplitude. .470 (b) Determine the frequency. 1.331 (c) Determine the total energy. (d) Determine the kinetic energy. e) Determine the potential energy. I did the first two parts (a-b), but I'm stuck on c,d & e, the questions about the Energy of the spring. 2. Relevant equations PE = .5kx^2 and KE = .5KA^2 F/x=k 3. The attempt at a solution I've tried these 3 multiple times and I keep getting them wrong. One thing I'm not sure of, is is "x" the amplitude? I have been plugging in .29 for the "x" and .47 for the "A", but just curious if this is the reason I'm getting these wrong. I would think, that according to these formulas, KE+PE=TOTAL ENERGY, and I thought I was doing them right. I'm at my wits end.