An 64.0 N box of clothes is pulled 5.8 m up a 30.0° ramp by a force of 97 N that points along the ramp. If the coefficient of kinetic friction between the box and the ramp is 0.22, calculate the change in the box's kinetic energy.

Answer 1

Change in kinetic energy = (97 N)(5.8 m)cos(30°) - (0.22)(64.0 N)(5.8 m)sin(30°)

Change in kinetic energy = 441.2 J