A 10 lb box is released from rest at a distance d = 5 ft from the bottom of a smooth chute...

A 10 lb box is released from rest at a distance d = 5 ft from the bottom of a smooth chute with θ = 30°. The friction between the chute and the box is negligible, and so is the change in speed of the box in going from the inclined to the horizontal part of the chute. If the duration of the transition between inclined and horizontal motion takes 0.02 s, determine the average force acting on the box during this transition.

Figure P5.27