A long, narrow bar magnet that has magnetic moment m parallel to its long axis is suspended
Question:
A long, narrow bar magnet that has magnetic moment m parallel to its long axis is suspended at its center as a frictionless compass needle. When placed in a magnetic field B, the needle lines up with the field. If it is displaced by a small angle θ, show that the needle will oscillate about its equilibrium position with frequency f = (1/2)π √μB/I, where I is the moment of inertia about the point of suspension.
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From Equation 2815 The torque on the needle is t m B If is small sin a...View the full answer
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Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
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