The coefficient of static friction for the tires of a race car is 0.800 and the coefficient of kinetic friction is 0.600. The car is on a level circular track of 25.0 m radius on a planet where g=2.45m/s^2 compared to Earth's 9.80m/s^2 . The maximum safe speed on the track on the planet is ____ times as large as the maximum safe speed on Earth. Question 2 options: 0.75 4.00 0.500 2.00 0.250

The coefficient of static friction for the tires of a race car is 0.800 and the coefficient of kinetic friction is 0.600. The car is on a level circular track of 25.0 m radius on a planet where g=2.45m/s^2 compared to Earth's 9.80m/s^2 . The maximum safe speed on the track on the planet is ____ times as large as the maximum safe speed on Earth. Question 2 options: 0.75 4.00 0.500 2.00 0.250

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter6: Applications Of Newton’s Laws Of Motion

Section: Chapter Questions

Problem 45PQ: The drag coefficient C in FD=12CAv2 (Eq. 6.5) depends primarily on the shape of the object. You...

See similar textbooks

Similar questions

Consider a wet banked racetrack, where there is a coefficient of static friction of 0.33 and a coefficient of kinetic friction of 0.28 between the tires and the surface of the racetrack. The radius of the curve is 60.0 m . Part A If the banking angle is 28.0 degrees , what is the maximum speed the automobile can have before sliding up the banking? Part B For the situation in Part (A), how big is the normal force on the car by the track, for each kg of mass of the car? Part C What is the minimum speed the automobile can have before sliding down the banking? Part D For the situation in Part (C), how big is the normal force on the car by the track, for each kg of mass of the car?
Q1) Circular motionA carnival ride has people stand inside a vertical cylinder with theirbacks to the wall. The cylinder starts spinning counterclockwise and theriders find that they are “stuck” to the wall and don’t slide down, evenwhen the floor is removed.The ride has a radius of r. The person has a mass of m and is movingwith a constant speed of v. The coefficient of static friction between theperson and the wall is μs , and kinetic friction μk. The person is onlytouching the wall, not touching the floor.a) Draw a free body diagram for the person when they are on the left-hand side, as shown.Clearly label all forces. Use the notation used in class.b) What is the magnitude and direction of the acceleration of the person?Give your answer in terms of variables only (r, v, m, μs, μk, and g)c) What is the magnitude of the normal force of the wall on the person?Solve this problem using Newton’s 2nd Law. Show all your work.Give your answer in terms of variables only (r, v, m, μs, μk, and…
An automobile approaches a barrier at a speed of 20 m/s along a level road. The driver locks the brakes at a distance of 50 m from the barrier. What minimum coefficient of kinetic friction is required to stop the automobile before it hits the barrier? a. 0.4 b. 0.5 c. 0.6 d. 0.7 e. none of choices
Suppose a car rounds a curve at a constant speed of 13 m/s. The curve is a circular arc with a radius of 100 m. Ignore air friction initially. (a) What is the magnitude and direction of the horizontal force that the road must exert on the car to keep it moving along the curve? Express this magnitude as a fraction of the car’s weight. The magnitude of the horizontal force is _______∣F→g∣|. The direction is (Choose one) Horizontal and parallel to the direction the car turns to Vertical and perpendicular to the direction the car turns to vertical and parallel to the direction the car turns to horizontal and perpendicular to the direction the car turns to (b) Now suppose that air friction is not zero, but is about half the result that you calculated for part (a). Must the force that the road exerts on the car increase in magnitude compared to the no-drag case? (Choose )Yes or No Must it change its direction? (Choose) Yes Or No
What is the difference between static friction and kinetic friction? a. The object is not moving for static friction to apply while the object is sliding for kinetic friction to apply. b. Static friction ranges from zero to a maximum value while kinetic friction is constant. c. Coefficient of static friction tend to be greater than coefficient of kinetic friction. d. All of the choices.
A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle. The coefficients of static and kinetic friction between the hockey puck and the metal ramp are μs = 0.40 and μk = 0.30, respectively. The puck's initial speed is 14.9 m/s. What speed does it have when it slides back down to its starting point?
Suppose the coefficient of static friction between the road and the tires on a car is 0.774 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 33.1 m radius? Number Enter your answer in accordance to the question statement Units Choose the answer from the menu in accordance to the question statement This answer has no units° (degrees)mkgsm/sm/s^2NJWN/mkg·m/s or N·sN/m^2 or Pakg/m^3gm/s^3times
A 4.0 kg block is on a horizontal surface with coefficient of static friction = 0.25 and an unknown coefficient of kinetic friction. A person pushes horizontally on the block. When the block is pushed with 4.0 N of force in the same direction that the block is sliding, it slows down at a rate of 1.0 m/s2 . The magnitude of the kinetic friction force is ____ N.
A block weighing 60 N rests on a horizontal floor. a) What is the minimum force that will make the block move if the coefficient of static friction is 0.20? b) What is the minimum force that will keep the block moving at uniform speed once it starts moving if the coefficient of kinetic friction is 0.10? please include clear solutions please.
Manny Pacquiao's automobile is about to come closer to a barrier at a speed of 25 m/s along a level road. He locks the brakes at a distance of 40 m from the barrier. What minimum coefficient of kinetic friction is required to stop the automobile before it hits the barrier? 0.2 0.4 0.8 0.5
A cord passing over a pulley connects two masses, as shown, where m1 = 3.60 kg and m2 = 7.20 kg. The system accelerates with a magnitude of 1.26 m/s2. The coefficient of kinetic friction between the masses and the incline is the same for both masses. Assume the pulley is frictionless, and the cord is massless. (a) What is the coefficient of kinetic friction? (b) What is the tension (in N) in the cord?
Otto the school bus driver drives his school bus into a 500-m radius horizontal curve on a rainy day when the coefficient of static friction is only 0.5 between its tires and the road. What is the maximum speed at which the bus can travel around this curve without sliding? a) 24.8 m/s b) 33.1 m/s c) 40.1 m/s d) 29.6 m/s e) 49.5 m/s