A 28-kg box is being moved 12.0 m up a ramp, inclined at 25° from the horizontal. Two forces are applied on the object: F1 = 80.0 N parallel with the ramp and F2 = 120 N, 30° with respect to the ramp. Coefficient of kinetic friction is 0.15. a) the work done by each external force acting on the box = F1=960J F2= 1247.1J

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