A simple pendulum consists of a mass m suspended from a fixed point by a weight-less, extension

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A simple pendulum consists of a mass m suspended from a fixed point by a weight-less, extension less rod of length l. Obtain the equation of motion and, in the approximation that sin θ ≡ θ, show that the natural frequency is w0 = √g/l, where g is the gravitational field strength. Discuss the motion in the event that the motion takes place in a viscous medium with retarding force 2m√gl θ.
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Physics

ISBN: 978-0470879528

9th edition

Authors: John D. Cutnell, Kenneth W. Johnson

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