The figure shows a 2400 kg cable car descending a high hill. A counterweight of mass 2200 kg on the other side of the hill aids the brakes in controlling the cable car's speed. 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? Counterweight 200 m 20° 2200 N 3300 N O 980 N 4400 N

The figure shows a 2400 kg cable car descending a high hill. A counterweight of mass 2200 kg on the other side of the hill aids the brakes in controlling the cable car's speed. 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? Counterweight 200 m 20° 2200 N 3300 N O 980 N 4400 N

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter15: Fluids

Section: Chapter Questions

Problem 73PQ

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Newton’s Third Law of Motion

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The figure shows a 2400 kg cable car descending a high hill. A counterweight of mass 2200 kg on the other side of the hill aids the brakes in controlling the cable car's speed. 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?
Counterweight
200 m
30°
20°
2200 N
3300 N
980 N
4400 N

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