A 3.8-kg mass on a spring oscillates as shown in the displacement-versus-time graph in Fig...

A 3.8-kg mass on a spring oscillates as shown in the displacement-versus-time graph in Figure. (a) Referring to the graph, at what times between t = 0 and t = 6.0 s does the mass experience a force of maximum magnitude? Explain. (b) Calculate the magnitude of the maximum force exerted on the mass. (c) At what times shown in the graph does the mass experience zero force? Explain. (d) How much force is exerted on the mass at the time t = 0.50 s?

FIGURE