- 2 Pulling A Cart Up An Incline At Constant Speed Consider A Cart Being Pulled Up An Inclined Plane At Constant Speed B 1 (68.45 KiB) Viewed 44 times
2. Pulling a Cart Up an Incline at Constant Speed. Consider a cart being pulled up an inclined plane at constant speed by a student during a Physics lab. The applied force on the cart (say 18 N) is directed parallel to the incline to cause the cart to be displaced parallel to the incline for a given displacement (say 0.7 m). The initial energy plus the work done by the external force equals the final energy. If the cart begins with o Joules of energy (this is just another made up value), and the student does 12.6 Joules of work (F-d-cosine of angle = 18 N-0.7 m.cosine o degrees = 12.6 J), then the cart will finish with 12.6 Joules of mechanical energy. The final energy (12.6 J) is? F=18 N d=0.70 m Final Energy = Initial Energy = 0 J→ 27