Physics

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A pendulum is composed of a mass m suspended from the ceiling by a massless string of length L. If the mass is pulled back so that it is raised an amount L/4 and then released, what is the tension on the string at the bottom of the swing?
A.3 mg
B.4 mg
C.2 mg
D.5/2 mg
E.3/2 mg
F.1/2 mg
G.mg

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