A 5200-kg cable car in Hong Kong is pulled a distance of 360 m up a hill inclined at 12º from the horizontal.The change in the potential energy of the car is A)1.8 $\times$ 10⁷ J B)1.2 $\times$ 10⁷ J C)3.8 $\times$ 10⁶ J D)6.0 $\times$ 10⁷ J E)1.8 $\times$ 10⁶ J

Question

Quizplus · Accepted Answer

The change in potential energy is given by mgh, where h is the vertical height. h = 360 m * sin(12º). Calculate h and then use m = 5200 kg and g = 9.8 m/s² to find the change in potential energy.

A 5200-Kg Cable Car in Hong Kong Is Pulled a Distance