An object consists of a mass of m = 647 g. It is joined to a spring which consists of a spring constant of value k = 65 N/m. At time t = 0 the object is pulled to a distance of 28.1 cm from its equilibrium position (which you might select conveniently at x = 0). The surface on which the object moves is frictionless.
Determine the net energy of the system?
Deduce the outcome in the unit [J] and to three significant figures.