Find the Lagrangian and Lagrange's equations for a simple pendulum if the cord is replaced by a spring constant k. If unstretched the spring length is r0, and the polar coordinates of the mass m are (r, theta), the potential energy of the spring is 1/2(k)(r-r0)^2

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Find the Lagrangian and Lagrange's equations for a simple pendulum if the cord is replaced by a spring constant k. If unstretched the spring length is r0, and the polar coordinates of the mass m are (r, theta), the potential energy of the spring is 1/2(k)(r-r0)^2

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