A vehicle with a mass of 2.1×10³ kg is driving at a speed of 61 km/h around a level roadway with a curvature radius of 61 meters, just staying on the roadway (i.e., driving at the maximum safe speed for this turn and the tire treads). What is the coefficient of friction between the tires and the road? (Hint: Watch your units above.) Answer: μ = (no units)

A highway curve of a radius of 400 m is designed for traffic moving at a speed of 91.0 km/hr. What is the correct banking angle of the road?

A plane in a holding pattern flies at a speed of 250 m/s in a circle with a radius of 22 km.  a) Determine the banking angle of the plane (measured from the horizontal) that would cause the passengers not to need a friction force to stay in their seats.  Use g = 10 m/s/s.  Enter units as degrees.   b) What would be the apparent weight of a 70 kg person in the plane?  Use g = 10 N/kg.

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An airplane is flying in a horizontal circle at a speed of 441 km/h. If its wings are tilted 40° to the horizontal, what is the radius of the circle in which the plane is flying? Assume that the required force is provided entirely by an "aerodynamic lift" that is perpendicular to the wing surface. m I 0

An accelerometer C is mounted to the side of the roller-coaster car and records a total acceleration of 3.3g as the empty car passes the bottommost position of the track as shown. If the speed of the car at this position is 195 km/h and is decreasing at the rate of 22 km/h every second, determine the radius of curvature p of the track at the position shown. Answer: p-i I ! m 0.73 m

A car on a highway turns a corner.  It starts skidding at 15 m/s.  The coefficient of skid friction is 0.5. The turn radius is _____ meter.

On a typical road, the force of friction during a turn can be up to 195,000 N. If a car has a mass of 1050kg and makes a turn with a radius of 20.0m, how fast can it be going?

An engineer wants to design an oval racetrack such that 3.20 × 10³ lb racecars can round the exactly 1000 ft radius turns at 1.00 x 102 mi/h without the aid of friction. She estimates that the cars will round the turns at a maximum of 175 mi/h. Find the banking angle necessary for the race cars to navigate the turns at 1.00 × 10² mi/h without the aid of friction. 0 = What additional radial force F, is necessary to prevent a race car from drifting on the curve at 175 mi/h? This banking and radius are very close to the actual turn data at Daytona International Speedway, where 3.20 × 10³ lb stock cars travel around the turns at about 175 mi/h. 0 Fr= N