Part A A small car of mass m and a large car of mass 4m drive along a highway at constant speed. They approach a curve of radius R. Both cars maintain the same acceleration a as they travel around the curve. How does the speed of the small car vs compare to the speed of the large car vL as they round the curve? You did not open hints for this part. ANSWER: Vs = ¡VL Vs = ¿VL Vs = VL = 2vL vs = 4vL Part B Now assume that two identical cars of mass m drive along a highway. One car approaches a curve of radius 2R at speed v. The second car approaches a curve of radius 6R at a speed of 3v. How does the magnitude F1 of the net force exerted on the first car compare to the magnitude F2 of the net force exerted on the second car? You did not open hints for this part. ANSWER: F; = }F2 O F =F2 Fi = F2 F1 = 3F2 F1 = 27F2

Part A A small car of mass m and a large car of mass 4m drive along a highway at constant speed. They approach a curve of radius R. Both cars maintain the same acceleration a as they travel around the curve. How does the speed of the small car vs compare to the speed of the large car vL as they round the curve? You did not open hints for this part. ANSWER: Vs = ¡VL Vs = ¿VL Vs = VL = 2vL vs = 4vL Part B Now assume that two identical cars of mass m drive along a highway. One car approaches a curve of radius 2R at speed v. The second car approaches a curve of radius 6R at a speed of 3v. How does the magnitude F1 of the net force exerted on the first car compare to the magnitude F2 of the net force exerted on the second car? You did not open hints for this part. ANSWER: F; = }F2 O F =F2 Fi = F2 F1 = 3F2 F1 = 27F2

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 73P: A child of mass 40.0 kg is in a roller coaster car that travels in a loop of radius 7.00 m. At point...

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flea gets its thrills by riding on the outer edge of a golden oldies record album of radius 15 cm as it is being played with a rotational period of 1.8 seconds. a) What is the flea’s average velocity? b) What is the flea’s centripetal acceleration?
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A car of mass m passes over a hump in a road that follows the arc of a circle of radius R as shown. (a) If the car travels at a speed υ, what force does the road exert on the car as the car passes the highest point of the hump? (b) What If? What is the maximum speed the car can have without losing contact with the road as it passes this highest point?
A car of mass m follows a truck of mass 2m around a circular turn. Both vehicles move at speed v. a. What is the ratio of the truck's net centripetal force to the car's net centripetal force? b. At what new speed vtruck will the net centripetal force acting on the truck equal the net centripetal force acting on the car still moving at the original speed v? State your answer in terms of v.
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