A 3590-lb car travels up the 7-percent incline shown. The car is subjected to a 45-lb aerodynamic drag force and a38-lb force due to all other factors such as rolling resistance. Determine the power output required at a speed of65 mi/hr if (a) the speed is constant and (b) the speed is increasing at the rate of 0.08g.65 mi/hrV =7100Answers:hp(a) Constant speed:P =(b) Increase in speed is 0.08g: P= ihp

Draw the free body diagram of the car.

Answered: A 3590-lb car travels up the 7-percent…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A ski lift has a one-way length of 1 km and a vertical rise of 200 m. The chairs are spaced 20 m apart, and each chair can seat three people. The lift is operating at a steady speed of 10 km/h. Neglecting friction and air drag and assuming that the average mass of each loaded chair is 250 kg, determine the power required to operate this ski lift. Also estimate the power required to accelerate this ski lift in 5 s to its operating speed when it is first turned on.
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