A mass of 311 g connected to a light spring of force constant 37.2 N/m oscillates on a horizontal, frictionless track. The amplitude of the motion is…

A mass of 311 g connected to a light springof force constant 37.2 N/m oscillates on ahorizontal, frictionless track. The amplitudeof the motion is 7.6 cm.Calculate the total energy of the system.Answer in units of J