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•42 Suppose the coefficient of static friction between the road and the tires on a car is 0.60 and the car has no negative lift. What speed will put the car on the verge of sliding as it rounds a level curve of 30.5 m radius? OFthe

•42 Suppose the coefficient of static friction between the road and the tires on a car is 0.60 and the car has no negative lift. What speed will put the car on the verge of sliding as it rounds a level curve of 30.5 m radius? OFthe

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ion is 0.40.A 1 directly on the resulting the air density is 1.20 kg/m³. (a) What is the terminal speed? (b) If a skier can vary C by a slight amount dC by adjusting, say, the hand positions, what is the corresponding variation in the terminal onal area of the Is A = 1.30 m², the drag coefficient is C = 0.150, and speed? Module 6-3 Uniform Circular Motion •41 A cat dozes on a stationary merry-go-round in an amuse- ment park, at a radius of 5.4 m from the center of the ride. Then the operator turns on the ride and brings it up to its proper turning rate of one complete rotation every 6.0 s. What is the least coeffi- cient of static friction between the cat and the merry-go-round that will allow the cat to stay in place, without sliding (or the cat cling- ing with its claws)? oblem 35. ck? •42 Suppose the coefficient of static friction between the road and the tires on a car is 0.60 and the car has no negative lift.What speed will put the car on the verge of sliding as it rounds a level the spread- Assuming n one posi- tional area curve of 30.5 m dius? •43 ILW What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 29 km/h and the u, between tires and track is 0.32? •44 During an Olympic bobsled run, the Jamaican team makes a turn of radius 7.6 m at a speed of 96.6 km/h. What is their accelera- tion in terms of g? sume that the typical S-sectional ake the air friction to 045 SSM ILW A student of weight 667 N rides a along the nce it has etarded by Eten meas- 2.00 times vhat wind steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force Fy on the student from the seat is 556 N. (a) Does the student feel "light" or "heavy" there? (b) What is the magnitude of Fy at the lowest point? If the wheel's speed is doubled, what is the magnitude Fy at the (c) high- est and (d) lowest point? 46 A police officer in hot pursuit drives her car through a circular 55.0 kg. What are (a) the magnitude and (b) the angle (relative to ver tical) of the net force of the officer on the car seat? (Hint: Conside both horizontal and vertical forces.) ie reason- turn of radius 300 m with a constant speed of 80.0 km/h. Her mass is nues with. us ejection A circular-motion addict of mass 80 kg rides a Fern rizontally a the e47 at is the period of the motion? What is the ma m the seat when be wheel around in a vertical circle of radius 10 m at a constant spe
Transcribed Image Text:ion is 0.40.A 1 directly on the resulting the air density is 1.20 kg/m³. (a) What is the terminal speed? (b) If a skier can vary C by a slight amount dC by adjusting, say, the hand positions, what is the corresponding variation in the terminal onal area of the Is A = 1.30 m², the drag coefficient is C = 0.150, and speed? Module 6-3 Uniform Circular Motion •41 A cat dozes on a stationary merry-go-round in an amuse- ment park, at a radius of 5.4 m from the center of the ride. Then the operator turns on the ride and brings it up to its proper turning rate of one complete rotation every 6.0 s. What is the least coeffi- cient of static friction between the cat and the merry-go-round that will allow the cat to stay in place, without sliding (or the cat cling- ing with its claws)? oblem 35. ck? •42 Suppose the coefficient of static friction between the road and the tires on a car is 0.60 and the car has no negative lift.What speed will put the car on the verge of sliding as it rounds a level the spread- Assuming n one posi- tional area curve of 30.5 m dius? •43 ILW What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 29 km/h and the u, between tires and track is 0.32? •44 During an Olympic bobsled run, the Jamaican team makes a turn of radius 7.6 m at a speed of 96.6 km/h. What is their accelera- tion in terms of g? sume that the typical S-sectional ake the air friction to 045 SSM ILW A student of weight 667 N rides a along the nce it has etarded by Eten meas- 2.00 times vhat wind steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force Fy on the student from the seat is 556 N. (a) Does the student feel "light" or "heavy" there? (b) What is the magnitude of Fy at the lowest point? If the wheel's speed is doubled, what is the magnitude Fy at the (c) high- est and (d) lowest point? 46 A police officer in hot pursuit drives her car through a circular 55.0 kg. What are (a) the magnitude and (b) the angle (relative to ver tical) of the net force of the officer on the car seat? (Hint: Conside both horizontal and vertical forces.) ie reason- turn of radius 300 m with a constant speed of 80.0 km/h. Her mass is nues with. us ejection A circular-motion addict of mass 80 kg rides a Fern rizontally a the e47 at is the period of the motion? What is the ma m the seat when be wheel around in a vertical circle of radius 10 m at a constant spe
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