The drawing shows two boxes resting on frictionless ramps. One
box is relatively light and sits on a steep ramp. The other box is
heavier and rests on a ramp that is less steep. The boxes are
released from rest at A and allowed to slide down the ramps. The
two boxes have masses of 11 and 31 kg. If A and B are 4.5 and 1.5
m, respectively, above the ground, determine the speed of (a) the
lighter box and (b) the heavier box when each reaches B. (c) What
is the ratio of the kinetic energy of the heavier box to that of
the lighter box at B?
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