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In a circus balancing act, a woman performs a headstand on

Physics, | 9th Edition | ISBN: 9780470879528 | Authors: John D. Cutnell, Kenneth W. Johnson ISBN: 9780470879528 211

Solution for problem 4.44 Chapter 4

Physics, | 9th Edition

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Physics, | 9th Edition | ISBN: 9780470879528 | Authors: John D. Cutnell, Kenneth W. Johnson

Physics, | 9th Edition

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Problem 4.44

In a circus balancing act, a woman performs a headstand on top of a standing performers head, as Figure 4.15a illustrates. The woman weighs 490 N, and the standing performers head and neck weigh 50 N. It is primarily the seventh cervical vertebra in the spine that supports all the weight above the shoulders. What is the normal force that this vertebra exerts on the neck and head of the standing performer (a) before the act and (b) during the act?

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Physics 2 for Engineering Week 9 Magnetic Field and Forces B – Magnetic field FB– Magnetic force Moving charge q ge1erates a magnetic field B, which exerts F on anBther moving charge q 2 FB= q v x B With charge q, velocity v, magnetic field generated B, and magnetic force exerted F B Unit of B is Tesla (T); 1 Tesla = 1 N/Am = 10 Gauss FBis perpendicular to both v and B Motion of charged particles in magnetic field 2 FBis a centripetal force; FB= q v B = m v R Radius of orbit R = m v / q B where v is perpendicular to B Time Period = 2 π R / v; Angular velocity ω = v / R = q B / m Dots = vector pointing out of plane; crosses = pointing into plane In

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Chapter 4, Problem 4.44 is Solved
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Textbook: Physics,
Edition: 9
Author: John D. Cutnell, Kenneth W. Johnson
ISBN: 9780470879528

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In a circus balancing act, a woman performs a headstand on