A car that weighs 5000 lbs is parked on a hill in San Francisco with a slant of 27°from the horizontal. How much force will keep it from rolling down the hill? Round to the nearest integer. A) 2,270 ft lbs. B) 4,455 ft lbs. C) 2,548 ft lbs. D) 11,013 ft lbs.

Question

Quizplus · Accepted Answer

The force of gravity pulling the car down the hill is 5000 lbs * sin(27°) = 2270 lbs. The force needed to keep the car from rolling down the hill is equal to the force of gravity, so the answer is 2270 lbs.

A Car That Weighs 5000 Lbs Is Parked on a Hill