A race car travels 76 m/s around a circular track of radius 159 m What is the magnitude of the resultant force on the 1600 kg driver and his car if the car does not slip?
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- At what maximum speed can a car exit onto a 40-m-radius circular freeway ramp without sliding if the coefficient of static friction between the tires of the car and the road is 0.90?In a recent study of how mice negotiate turns, the mice ran around a circular 90° turn on a track with a radius of 0.15 m. The maximum speed measured for a mouse (mass = 18.5 g) running around this turn was 1.29 m/s. What is the minimum coefficient of friction between the track and the mouse’s feet that would allow a turn at this speed?A car travels at a steady 40.0 m/s around a horizontal curve of radius 200 m. What is the minimum coefficient of static friction between the road and the car's tires that will allow the car to travel at this speed without sliding? 1.23 0.816 0.736 0.952
- Newtons Third Law: A 2.100×103 kg car is parked on a steep hill inclined at 23.0o. What is the force of friction acting on the car? The coefficients of friction between the tires and the road are μk = 0.400 and μs = 0.900. 1.89×104 N 8.04×103 N 7.24×103 N 3.22×103 NAn automobile is going up a grade of 15 with an initial velocity of 30 m/s. The coefficient of static friction between the tires and the road is 0.7. a) What minimum distance does it take to stop the car? b) What minimum distance would it take to stop the car if it were going down the grade?A car enters a 368-m radius horizontal curve on a rainy day when the coefficient of static friction between its tires and the road is 0.52. What is the maximum speed at which the car can travel around this curve without sliding in m/s?
- 7. A car is right on the verge of sliding as it speeds around a level circular track. The radius of the circular track is 21 m, and the coefficient of static friction between the car's tires and the track is 0.7, while the coefficient of kinetic friction is 0.56. What is the speed of the car?A 30 kg object at the origin and initially at rest experiences a force given by F = 3N vt î + 2N tĵ. What is the object's speed and direction after 20 s?2. (a) A distant planet has radius 3.6 x 106 m. A 6 kg cat weighs 22 N on the surface of this planet. Calculate the mass of the planet. (b) You push a 65 kg desk horizontally and it accelerates at 1.2 m/s2. If the coefficient of kinetic friction between the desk and floor is 0.38, calculate the magnitude of the force you apply to the desk.
- A car is rounding a turn on a road that is banked at some angle with respect to the horizontal. The road is covered with ice and there is no friction between the road and the tires. which of the following forces is responsible for keeping the car on its circular path? The horizontal component of the force of gravity It is impossible for the car to stay on a circular path in this situation The vertical component of the force of gravity The horizontal component of the normal force The vertical component of the normal force Complete the following sentence. Centripetal forces enable objects to follow circular trajectories with constant speed. enable objects to follow circular trajectories with constant acceleration. O are described by Hooke's law for springs. double in magnitude when an object's speed in uniform circular motion is doubled. OOOOYour 1500 kg SUV enters a 35.0 m radius traffic circle. It is an icy day and the coefficient of static friction between your tire and the road is 0.15. What is the maximum speed that you can go through the traffic circle without sliding? Answer in km/h.A mischievous child ties a June Bug (a large beetle) on to string. The child holds his arm above his head and the bug attached to the string flies around in a horizontal circle. What is the direction of the net force on the bug?