The 2060 kg cable car shown in the figure descends a 200-m-high hill. In addition to its brakes, the cable car controls its speed by pulling an 1820 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are negligible.

How much braking force does the cable car need to descend at constant speed?

And

One day the brakes fail just as the cable car leaves the top on its downward journey. What is the runaway car's speed at the bottom of the hill?
 

Transcribed Image Text:

Figure 1 O of 1 Counterweight 200 m 30° 20° Figure 1 O of 1 Counterweight 200 m 30° 20°

Answer rating: 100% (QA)

a For both objects on both sides of the hill we will take the xaxis to be along ... View the full answer