A small model car with mass m travels at constant speed on theinside of a track that is a vertical circle with radius 5.00 m .If the normal force exerted by the track on the car when it is at the bottomof the track (point A) is equal to 2.50mg, how much time does ittake the car to complete one revolution around the track?
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A small model car with mass m travels at constant speed on the
inside of a track that is a vertical circle with radius 5.00 m .
If the normal force exerted by the track on the car when it is at the bottom
of the track (point A) is equal to 2.50mg, how much time does it
take the car to complete one revolution around the track?
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- A stone, of mass m, is attached to a strong string and whirled in a vertical circle of radius r. At the exact bottom of the path the tension in the string is 2 times the stone's weight. The stone's speed at this point is given by 2g√// 4gr 2√√gr 2gr /2grA car is driving on circular test track of radius 900 m at a constant tranlational speed. The friction foce between the tire and the track provides the centripetal force to keep the car in the corcular motion. If the lap time of the car is 58 s and the mass of the car is 1200 kg. fond the magnitude of the frictional force between the tire and the track in the unit N.A 22.4 kg ice skater is moving at 5.35 m/swhen she grabs the loose end of a rope, the opposite end of which is tied to a pole. She thenmoves in a circle of radius 0.567 m around thepole.Find the force exerted by the rope on herarms. The acceleration of gravity is 9.8 m/s2. Answer in units of kN.
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