Concept Simulation 5.2 reviews the concepts that are involved in this problem. A car is safely...
Concept Simulation 5.2 reviews the concepts that are involved in
this problem. A car is safely negotiating an unbanked circular turn
at a speed of 23 m/s. The road is dry, and the maximum static
frictional force acts on the tires. Suddenly a long wet patch in
the road decreases the maximum static frictional force to one third
of its dry-road value. If the car is to continue safely around the
curve, to what speed must the driver slow the car?
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Concept Simulation 5.2 reviews the concepts that are involved in
this problem. A car is safely...
A car is safely negotiating an unbanked circular turn at a speed of 29 m/s. The...
A car is safely negotiating an unbanked circular turn at a speed of 29 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to one-sixth of its dry-road value. If the car is to continue safely around the curve, to what speed must the driver slow the car? m/s
A car is safely negotiating an unbanked circular turn at a speed of 18 m/s. The road is dry, and the maximum static fri...
A car is safely negotiating an unbanked circular turn at a speed of 18 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to one third of its dry-road value. If the car is to continue safely around the curve, to what speed must the dirver slow the car?
Complete the following statement: The maximum speed at which a car can safely negotiate an unbanked...
Complete the following statement: The maximum speed at which a car can safely negotiate an unbanked curve depends on all of the following factors except: Please explain in detail. a) the acceleration due to gravity b) the diameter of the curve c) the ratio of the static frictional force between the road and the tires and the normal force exerted on the car d) the coefficient of static friction between the road and the tires. e) the coefficient of kinetic...
You are designing a circular unbanked freeway ramp with a radius of 100. m, the coefficient...
You are designing a circular unbanked freeway ramp with a radius of 100. m, the coefficient of static friction between the tires and asphalt is 0.800 dry and 0.400 wet. Find the maximum speed that a car can travel through the ramp during when the road is dry and wet in mph (miles per hour). Vmax, dry = Vmax, wet =
Brake or turn? Figure 6-45 depicts an overhead view of a car's path as the car...
Brake or turn? Figure 6-45 depicts an overhead view of
a car's path as the car travels toward a wall. Assume that the
driver begins to brake the car when the distance to the wall is
d = 109 m, and take the car's mass as m = 1430
kg, its initial speed as v0 = 37.0 m/s, and the
coefficient of static friction as μs = 0.530.
Assume that the car's weight is distributed evenly on the four
wheels,...
As an aid in working this problem, consult tion 5.2. Car A uses tires for which...
As an aid in working this problem, consult tion 5.2. Car A uses tires for which the coefficient of static friction is 1.1 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 25 m/s. Car B uses tires or which the coefficient of static friction is 0.8 on the same curve. What is the maximum speed at which car B can negotiate the curve? Additional Materials
1) A car with mass m = 1000 kg is traveling around a circular curve of...
1) A car with mass m = 1000 kg is traveling around a circular curve of radius r = 990 m when it begins to rain. The coefficients of static friction between the road and tires is μd = 0.66 when dry and μw = 0.26 when wet. a) Write an expression for the maximum magnitude of the force of static friction Ff acting on the car if μs is the coefficient of friction. b) What is the maximum tangential...
Problem A car travels at a constant speed of 29.5 mi/h (13.2 m/s) on a level...
Problem A car travels at a constant speed of 29.5 mi/h (13.2 m/s) on a level circular turn of radius 46.0 m, as shown in the bird's-eye view in Figure 7.13a. What minimum coefficient of static friction, Aus, between the tires and the roadway will allow the car to make the circular turn without sliding? Strategy In the car's free-body diagram (Fig. 7.13b) the normal direction is vertical and the tangential direction is into the page (step 2). Use Newton's...
2. A car of 1200 kg mass enters an unbanked, curved roadbed of radius 70 m....
2. A car of 1200 kg mass enters an unbanked, curved roadbed of radius 70 m. The coefficient of static friction between the tires and the roadbed is 0.50 A) If the car is traveling at 10 m/s, what is its centripetal acceleration? B) What is the centripetal force on the car? C) What is the frictional force on the tires? D) What is the maximum speed with which the car can take the turn?
A car travels at constant speed around a corner. The cars speed is 35 m/s and...
A car travels at constant speed around a corner. The cars speed is 35 m/s and the radius of the circle is 0.25 km. The coefficient of static friction between the tires and the road is 0.7. What is the frictional force needed for the car to make the turn? What is the maximum force the static friction can produce? Does the car stay on the road? The car is in motion so why is the static friction important?
Brake or turn? Figure 6-45 depicts an overhead view of
a car's path as the car travels toward a wall. Assume that the
driver begins to brake the car when the distance to the wall is
d = 109 m, and take the car's mass as m = 1430
kg, its initial speed as v0 = 37.0 m/s, and the
coefficient of static friction as μs = 0.530.
Assume that the car's weight is distributed evenly on the four
wheels,...
As an aid in working this problem, consult tion 5.2. Car A uses tires for which the coefficient of static friction is 1.1 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 25 m/s. Car B uses tires or which the coefficient of static friction is 0.8 on the same curve. What is the maximum speed at which car B can negotiate the curve? Additional Materials
Problem A car travels at a constant speed of 29.5 mi/h (13.2 m/s) on a level circular turn of radius 46.0 m, as shown in the bird's-eye view in Figure 7.13a. What minimum coefficient of static friction, Aus, between the tires and the roadway will allow the car to make the circular turn without sliding? Strategy In the car's free-body diagram (Fig. 7.13b) the normal direction is vertical and the tangential direction is into the page (step 2). Use Newton's...
2. A car of 1200 kg mass enters an unbanked, curved roadbed of radius 70 m. The coefficient of static friction between the tires and the roadbed is 0.50 A) If the car is traveling at 10 m/s, what is its centripetal acceleration? B) What is the centripetal force on the car? C) What is the frictional force on the tires? D) What is the maximum speed with which the car can take the turn?
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