How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 85m at a speed of 26.4 m/s? Assume that the tires are not slipping , but about to break free.
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- At amusement parks, there is a popular ride where the floor of a rotating cylindrical room falls away, leaving the backs of the riders “plastered” against the wall. Suppose the radius of the room is 3.3 m. If the coefficient of static friction between a rider’s back and the wall is 0.389, what is the minimum rotation speed of the cylindrical room in of revolutions per minute (rpm) if the rider is to remain in place when the floor drops away? Use g=10 m/s2.If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the curve (a real problem on icy mountain roads). (a) Calculate the ideal speed in (m/s) to take a 85 m radius curve banked at 15°. m/s (b) What is the minimum coefficient of friction needed for a frightened driver to take the same curve at 20.0 km/h?Engineers are designing a curved section of a highway to fit into a specific area. The curve has radius 121 m and is banked at an angle such that a car can travel around the curve at 28.7 m/s and stay on the road without the aid of a frictional force. Calculate the required banking angle (as measured above the horizontal). 0 =
- If the curve on the road has a bank angle of 18 degrees and the radius of curvature is 225m. a) what is the maximum speed you can go if the coefficient of friction between the tires and the road is 0.3? Your car is 1500kg. b)What is the minimum speed you can go without sliding?The posted speed limit for a flat (unbanked) curve of radius 45m is 45mph. What is the required coefficient of static friction between the road and car tires for this turn to be negotiated safely?A car tries to go around a curve with a radius of 55.0 m with a speed of 20 m/s. The coefficient of friction is 0.700. Will the car be able to make it around the curve, or will it slide off the curve? Thank you for your help!
- How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 125 m at a speed of 95 km/h?At takeoff a commercial jet has a 60.0 m/s speed. Its tires have a diameter of 0.700 m. (a) At how many rpm are the tires rotating? rpm (b) What is the centripetal acceleration at the edge of the tire? m/s2 (c) With what force must a determined 10−15 kg bacterium cling to the rim? N (d) Take the ratio of this force to the bacterium's weight. (force from part (c)/bacterium's weight)A curve in a stretch of highway has radius 512 m. The road is unbanked. The coefficient of static friction between the tires and road is 0.700. When the car enters the curve at a speed greater than the maximum safe speed (speed at which the car won’t skid), which of the following statements are correct?
- b) The maximum speed that a car can turn a curve of 9.00 m radius without skidding is 70.0 mph (miles per hour). If the coefficient of friction between the tires and the road is 0.600, what is the rated speed of the banked curve? On a wet day, the same car begins to skid on the curve when its speed reaches 60.0 mph. What is the coefficient of friction in this case? Please answer with complete solution and fre body diagramA racetrack curve has radius 120.0 m and is banked at an angle of 18.0. The coefficient of static friction between the tires and the roadway is 0.300. A race car with mass 900 kg rounds the curve with the minimum speed needed to not slide down the banking. (a) As the car rounds the curve, what is the normal force exerted on it by the road? (b) What is the car’s speed?A car negotiates an unbanked 81.7 m radius curve at 17.4 m/s. What would the minimum coefficient of friction be needed to negotiate the curve?