physics

posted by .

The coefficient of static friction between the tires of a car and a horizontal road is 0.515. As the car brakes, what is the magnitude of the maximum acceleration of the car? Assume the net force on the car is the maximum static friction force.

  • physics -

    The accelerating force M*a must not exceed the maxmum static friction force mus*M*g. (mus is the static friction coefficient)

    Therefore

    a < mus*g

    Solve for the maximum acceleration a.

    This assumes that the road surface is not banked, as it is on most sharp turns. When a curve is "banked", gravity helps keep the car on the road.

  • physics -

    what is the net force in a rock that weighs 500N if the water it displaces is 300N

  • physics -

    net force= weight-bouyancy= 500-300 N

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A 1200-kg car rounds a corner of radius r = 45 m. If the coefficient of static friction between tires and the road is 0.93 and the coefficient of kinetic friction between tires and the road is 0.75, what is the maximum velocity the …
  2. physics

    The coefficient of sliding friction between rubber tires and wet pavement is 0.50. The brakes are applied to a 750 kg car traveling 30 m per second, and the car skids to a stop. What is the magnitude and direction of the force of friction …
  3. Physics

    A 1340 kg car going 21 m/s has to stop suddenly. The driver locks the brakes, and the car skids to a halt in a distance of 67 m . What was the car's acceleration while stopping?
  4. Physics help

    A car travels in a circle whose radius is 31 m, with a speed of 19 m/s. (1) What is the magnitude of the car's acceleration?
  5. physics

    A 1,660 kg car is parked on a hill with a slope of 8.0°. Its brakes and transmission are locked in position to keep the car from rolling. The coefficient of static friction of the rubber tires on the asphalt road is 0.14. What is …
  6. Physics

    Consider a car is heading down a 5.5° slope (one that makes an angle of 5.5° with the horizontal) under the following road conditions. You may assume that the weight of the car is evenly distributed on all four tires and that the …
  7. Physics

    A 1300kg car going 20m/s has to stop suddenly. The driver locks the brakes, and the car skids to a halt in a distance of 64m . What was the car's acceleration while stopping?
  8. physics

    What is the maximum speed that the car can turn in a curve of radius 29.0 m without slipping?
  9. physics

    A 1200kg car moves along a horizontal road at speed v0=23.3m/s,the road is wet, so the static friction coefficient between the road and the tires is only µs=0.209 and the kinetic friction coefficient is even lower µk=0.1463. The …
  10. Physics

    A sports car is accelerating up a hill that rises 17.0° above the horizontal. The coefficient of static friction between the wheels and the road is µs = 0.79. It is the static frictional force that propels the car forward. (a) …

More Similar Questions