3. A uniform rod of mass m and length L is freely pivoted at one end. What is the period of its oscillation? (I_system = 1/3 mL²)
(A) 2π(L/g)¹/²
(B) 2π(2L/3g)¹/²
(C) 2π(L/3g)³/²
(D) 2π(L/3g)¹/²
(E) 2π(3L/g)¹/²

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統計: A(0), B(1), C(0), D(0), E(0) #3384037

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