In Fig. 15-50, a 2.50 kg disk of diameter D $ 42.0 cm is
Chapter , Problem 56(choose chapter or problem)
In Fig. 15-50, a 2.50 kg disk of diameter D $ 42.0 cm is supported by a rod of length L $ 76.0 cm and negligible mass that is pivoted at its end. (a) With the massless torsion spring unconnected, what is the period of oscillation? (b) With the torsion spring connected, the rod is vertical at equilibrium.What is the torsion constant of the spring if the period of oscillation has been decreased by 0.500 s?
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