A man standing outside of the edge of a skating ring pushes on a package resting on the frictionless icy surface, transferring a total of 85 J of energy to the package. The package eventually comes into contact with a spring, compressing it 34 cm from its natural length. The same package, sliding on a rough surface instead, would have compressed the spring only 19 cm. Calculate the energy lost by the package on the rough surface. Calculate the energy lost by the package on the rough surface. 68 J 58 J 54 J 64 J 51 J