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A small car with mass 0.800 kg travels at constant speed

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 42E Chapter 5

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

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 )?

Step-by-Step Solution:
Step 1 of 3

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 of gravity is downward and normal force is upward n =m(g+a) A =(0.8 kg)(9.8 m/s +17.3 m/s ) 2 The normal force at the bottom is greater than at the top because it must balance the weight in addition to accelerate the car toward the center of its track

Step 2 of 3

Chapter 5, Problem 42E is Solved
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Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

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A small car with mass 0.800 kg travels at constant speed