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23 Nov 2019
The drawing shows two boxes resting on frictionless ramps. One boxis relatively light and sits on a steep ramp. The other box isheavier and rests on a ramp that is less steep. The boxes arereleased from rest at A and allowed to slide down the ramps. Thetwo boxes have masses of 15 and 50 kg. If A and B are hA = 4.3 andhB = 1.4 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 tothat of the lighter box at B?
(a) vB = 1 2 ---Select--- N m/s s m m/s^2 W J
(b) vB = 3 4 ---Select--- m/s N m/s^2 m J s W
(c) KE heavier
KE lighter
= 5
The drawing shows two boxes resting on frictionless ramps. One boxis relatively light and sits on a steep ramp. The other box isheavier and rests on a ramp that is less steep. The boxes arereleased from rest at A and allowed to slide down the ramps. Thetwo boxes have masses of 15 and 50 kg. If A and B are hA = 4.3 andhB = 1.4 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 tothat of the lighter box at B?
(a) vB = 1 2 ---Select--- N m/s s m m/s^2 W J
(b) vB = 3 4 ---Select--- m/s N m/s^2 m J s W
(c) KE heavier
KE lighter
= 5
Nelly StrackeLv2
3 May 2019
