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# A small car with mass 0.800 kg travels at constant speed ## Problem 42E Chapter 5

University Physics | 13th Edition

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Problem 42E

A small car with mass 0.800 kg travels at constant speed on the inside of a track that is a vertical circle with radius 5.00 m (Fig. E5.45). If the normal force exerted by the track on the car when it is at the top of the track (point B ) is 6.00 N, what is the nor-mal force on the car when it is at the bottom of the track (point A )?

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Solution 42E The gravity and normal forces acting on the car.Both forces are towards the centre of the circle at top Acceleration at point B(the top) mg+nB a= m 2 = (0.8 kg)(9.8 m/s )+6 N 8 kg 2 =17.3 m/s Normal force at point A(the bottom) The direction...

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A small car with mass 0.800 kg travels at constant speed

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