I need help with this question! 1. A car turning in a circle is acceleratring in...
I need help with this question!
1. A car turning in a circle is acceleratring in the centripetal direction, even if the speed is constant. This centripetal acceleration is the cause of a radially inward directed net force. On a level road this net force is the friction force acting from the road on the tires. You already looked at examples for this.
On racetracks and also highway turns the reliance on friction can be reduced by "banking" the road. This also reduces the risk of the vehicle to roll over. The picture shows two cars and a bus in an extremely banked turn at the Mercedes test track.
Draw a free-body diagram for a car in a banked curve. Then find an expression for the speed at which a car can negotiate the turn without any friction in the radial direction (f=0).
Calculate that speed (in mph) for a 65 m radius turn that is banked by 7 degrees.
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1. A car turning in a circle is acceleratring in...
Banked curves are designed so that the radial component of the normal force on the car rounding
Banked curves are designed so that the radial component of the normal force on the car rounding the curve provides the centripetal force required to execute uniform clrcular motion and safely negotlate the curve. A car rounds a banked curve with banking angle θ-27.1° and radius of curvature 157 m. (a) It the coefficient of static friction between the car's tires and the road is -0.316, what is the range ot speeds for which the car can safely negotiate the turn...
A civil engineer wishes to redesign the curved roadway in the figure in such a way...
A civil engineer wishes to redesign the curved roadway in the figure in such a way that a car will not have to rely on friction to round the curve without skidding. In other words, a car moving at the designated speed can negotiate the curve even when the road is covered with ice. Such a ramp is usually banked, which means that the roadway is tilted toward the inside of the curve. Suppose the designated speed for the road...
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...
A car travels at a speed of 21 m/s around a curve of 27 m. m...
A car travels at a speed of 21 m/s around a curve of 27 m. m = 1500 kg (i) What is the net centripetal force needed to keep the car from skidding sideways? (ii) Were there no friction between the car’s tires and the road, what centripetal force would be provided just by banking the road at 29o? (iii) Now, suppose a friction force is also present and prevents the car from skidding. Calculate the magnitude of the normal...
A highway curve of radius 68.0 m is banked at 21.4 degree so that a car...
A highway curve of radius 68.0 m is banked at 21.4 degree so that a car traveling at 26.4 m/s (95 km/hr) will utilize both banking and friction to keep it on the curve. Determine the minimum coefficient of static friction between the tires and the road to keep the car on the road at this speed on this curve.
5. Pogo the Clown and 33 of his colleagues speed along in his compact clown car, running late to a local charity event....
5. Pogo the Clown and 33 of his colleagues speed along in his compact clown car, running late to a local charity event. They encounter a turn of radius R banked at an angle with the horizontal What is the range of speeds within which Pogo's car can negotiate the turn without slipping? Assume a coefficient of friction between the road and tires. tan0 tan0 Rgv 1-tan Rg 5. 1+tan
5. Pogo the Clown and 33 of his colleagues speed...
Example 7.7 Buckle Up for Safety Goal Calculate the frictional force that causes an object to...
Example 7.7 Buckle Up for
Safety
Goal Calculate the frictional force that
causes an object to have a centripetal acceleration.
Problem A car travels at a constant speed of 31.5
mi/h (14.1 m/s) on a level circular turn of radius 55.0 m, as shown
in the bird's-eye view in Figure 7.13a. What minimum coefficient of
static friction, µs, between the tires and the
roadway will allow the car to make the circular turn without
sliding?
Strategy In the car's free-body...
Help please I don't no how to do these The curved section of a horizontal highway...
Help please I don't no how to do these
The curved section of a horizontal highway is a circular unbanked areof radius 760 m. If the coefficient of statiefriction between this roadway and typical tires is 0.40m, what would be the maximum safe driving speed for this horizontal curved section of highway? When a car goes around a banked circular curve at the proper speed for the banking angle, what force cause it to follow the circular path? gravity the...
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the...
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a turn with a radius of approximately 57.0 m . If the track is completely flat and the race car is traveling at a constant 30.5 m/s (about 68 mph ) around the turn, what is the race car's centripetal (radial) acceleration? centripetal acceleration: m/s2 Which force is responsible for the centripetal acceleration in this case? friction, normal ,gravity , or weight...
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the...
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a turn with a radius of approximately 57.0 m. If the track is completely flat and the race car is traveling at a constant 27.5 m/s (about 62 mph) around the turn, what is the race car's centripetal (radial) acceleration? centripetal acceleration: 12.19 m/s2 Incorrect Which force is responsible for the centripetal acceleration in this case? O weight gravity friction normal What...
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...
A highway curve of radius 68.0 m is banked at 21.4 degree so that a car traveling at 26.4 m/s (95 km/hr) will utilize both banking and friction to keep it on the curve. Determine the minimum coefficient of static friction between the tires and the road to keep the car on the road at this speed on this curve.
5. Pogo the Clown and 33 of his colleagues speed along in his compact clown car, running late to a local charity event. They encounter a turn of radius R banked at an angle with the horizontal What is the range of speeds within which Pogo's car can negotiate the turn without slipping? Assume a coefficient of friction between the road and tires. tan0 tan0 Rgv 1-tan Rg 5. 1+tan
5. Pogo the Clown and 33 of his colleagues speed...
Example 7.7 Buckle Up for
Safety
Goal Calculate the frictional force that
causes an object to have a centripetal acceleration.
Problem A car travels at a constant speed of 31.5
mi/h (14.1 m/s) on a level circular turn of radius 55.0 m, as shown
in the bird's-eye view in Figure 7.13a. What minimum coefficient of
static friction, µs, between the tires and the
roadway will allow the car to make the circular turn without
sliding?
Strategy In the car's free-body...
Help please I don't no how to do these
The curved section of a horizontal highway is a circular unbanked areof radius 760 m. If the coefficient of statiefriction between this roadway and typical tires is 0.40m, what would be the maximum safe driving speed for this horizontal curved section of highway? When a car goes around a banked circular curve at the proper speed for the banking angle, what force cause it to follow the circular path? gravity the...
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a turn with a radius of approximately 57.0 m. If the track is completely flat and the race car is traveling at a constant 27.5 m/s (about 62 mph) around the turn, what is the race car's centripetal (radial) acceleration? centripetal acceleration: 12.19 m/s2 Incorrect Which force is responsible for the centripetal acceleration in this case? O weight gravity friction normal What...
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