A thin uniform rod mass 175 kg swings about an axis that, Ask an Expert

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A thin uniform rod (mass = 1.75 kg) swings about an axis that passes through one end of the rod and is perpendicular to the plane of the swing. The rod swings with a period of 1.9 s and an angular amplitude of 2.0 ° .

(a) What is the length of the rod?

(b) What is the maximum kinetic energy of the rod as it swings?

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