An aluminum plate of 0.2 kg, primarily at 20°C, slides down a long surface of 15 m, inclined at a 30° angle to the horizontal. The force of kinetic friction precisely balances the component of gravity down the plane in such a way that the plate, once begun, glides down at constant velocity. When 90% of the mechanical energy of the system is absorbed through the aluminum, determine its temperature raise at the bottom of the incline? (Specific heat for aluminum is around 900 J/kg•°C.)