When a car travels around a curve itexperiences centripetal acceleration, as do alother objects. In general, the friction betweenthe road and the tires is enough to prevent thecar from slipping.Engineers, however, do not trust in friction. Norshould they. Instead, they play it safe and use abanked curve. By banking a curve with respectto the horizontal, we can lessen the amount offriction necessary, because the normal forcewill help out.1. Draw the free body diagram to show how theNormal Force “helps out".

Answered: Image /qna-images/answer/7405ac7a-6b86-4b31-8150-11f1e6872ce9.jpg

Answered: When a car travels around a curve it…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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The Gravitron ride has people step in, lean against a wall and “stick” when it spins and the floor drops out after a certain velocity. A rider has a mass of 50kg. The coefficient of static friction of the body against a wall is 0.8. The diameter of the ride is 10m. What is the maximum period of the ride’s rotation that will keep the student pinned to the wall once the floor drops?
A 2000 kg car is driving at a constant speed of 34.9 m/s takes a curve with a 80 m radius. The road is not banked (level road). What is the minimum value of the coefficient of static friction between the tires and the road so that the car can take this curve without slipping? Round your final answer to 1 decimal place. Side note: The speed's value is, in the range of 40 mph to 80 mph, given randomly in the question. If the coefficient of static friction is larger than 1, the car would slip. It is unrealistic to have that high the coefficient of friction in real life. Don't over-speed!
12
3. A roller coaster is built so that there is a circular curve of radius 80.0 m at the top of one hill. The speed with which the car goes over the hill varies. Assume the passenger has a mass of 50.0 kg. The cars have wheels over and under the track so that it stays on and the passenger is wearing a seatbelt. a. If the speed is 20.0 m/s going over the top what is the force on the passenger? Force factor? Is the force from the seat or the belt?
Josh is painting yellow stripes on a road using a paint roller. To roll the paint roller along the road, Josh applies a force of 15 N at an angle of 45° with respect to the road. The mass of the roller is 2.5 kg; and its radius is 4.0 cm. Ignoring the mass of the handle of the roller, what is the magnitude of the tangential acceleration of the roller? A. 4.2 m/s2 B. 6.0 m/s2 C. 15 m/s2 D. 110 m/s2
5. A 1900 kg car rounds a curve of radius 73.0 m banked at an angle of 15.0°. What is the magnitude of the friction force required for the car to travel at 86.0 km/h? N 20 www L MacBook Air 7 angle of 05 00 in 050 i 5 M F10 are of a
C. Which of Newton's Laws applies in reference to your body pulls to the right when the car turns to the left? 6. Describe what tangential velocity is in terms of swinging the bucket in a vertical circle and then letting the bucket go. 7. True or False: The centripetal force has the same direction as the centripetal acceleration. 8. Write the formula of cent etal acceleration in terms of tangential velocity. 9. Write the Formula of centripetal force in terms of tangential velocity.
A rotating space station simulates artificial gravity by means of centripetal acceleration at the rim. The apparent weight of a 54.2-kg passenger at the rim is 444 N. If the station rotates once every 42.5 s, what is the distance from the center of the station to the rim? m Save for Later Submit Answer
Problem 1: What is the ideal speed to take a 100 m radius curve that's banked at a 20° angle? "Ideal" in this context means the centripetal force is provided entirely by the horizontal component of the normal force with no need for static friction between the tires and the ground.
A car is trying to make a turn on a banked curve on a very icy day and the frictional force between the tires and road is zero. The curve has a radius of 50 m and the car is moving at 12 m/s. What angle should the curve be banked at for this to happen safely?
H4
5. When a road is dry, a particular car can safely navigate a turn with a 155 m radius of curvature at a maximum speed of 26.0 m/s without slipping. What is the coefficient of static friction between the tires and the road?

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