problem 1: Compute the centripetal force acting on a 925 kg car as it rounds an unbanked curve with a radius of 75 m at a speed of 22m/s?
problem 2: A small plane makes a complete circle with a radius of 3282 m in 2.0 min. Determine the centripetal acceleration of the plane?
problem 3: A car with a mass of 822 kg rounds an unbanked curve in the road at a speed of 28.0m/s. If the radius of the curve is 105 m, determine the average centripetal force acting on the car?
problem 4: An amusement park ride has a radius of 2.8 m. If the time of one revolution of a rider is 0.98 s, find out the speed of the rider?
problem 5: An electron (m = 9.11 x 10-31 kg) moves in a circle whose radius is 2.00 x 10-2 m. If the force acting on the electron is 4.60 x 10-14 N, determine the speed of the electrons?
problem 6: A 925 kg car rounds an unbanked curve at a speed of 25 m/s. If the radius of the curve is 72 m, determine the minimum coefficient of friction needed so that the car does not skid?
problem 7: A 2.7 x 103 kg satellite orbits the earth at a distance of 1.8 x 107 m from the earth’s center at a speed of 4.7 x 103 m/s. What is the force acting on the satellite by the earth?
problem 8: Compute the (a) speed and (b) acceleration of a point on the circumference of an old style phonograph record that revolves at 331/3 revolutions per minute if the diameter of the record is 30.0 cm.
problem 9: A string needs 135 N of force in order to break. A 2.00 kg mass is tied to the string and whirled in a horizontal circle with a radius of 1.10 m. Find out the maximum speed that the mass can be whirled at without breaking the string?
problem 10: A 932 kg car is traveling about an unbanked curve which has a radius of 82 m. Determine the maximum speed that this car can round this curve without skidding.
a) If the co-efficient of friction is .95?
b) If the co-efficient of friction is .40?
problem 11: Determine the maximum speed of a car rounding a 125 m curve in the highway under very icy conditions if the banking angle is 20.0º?
problem 12: A 745 m curve on a racetrack is to be banked for cars traveling at 90.0m/s. At what angle must it be banked if it is going to be employed under very icy conditions?
problem 13: An airplane traveling at a speed of 115 m/s makes a complete horizontal turn in 1.20 x 102 s. Determine the banking angle?
problem 14: A car rounds a very icy banked curve in the highway that is banked at an angle of 18º while traveling at a speed of 28 m/s. Find out the minimum radius of the curve?
problem 15: An airplane flying at a speed of 205 m/s makes a complete horizontal turn while banking at 29.0º. Find out the radius of the turn?