A large, simple pendulum is on displayin the lobby of the United Nations buildin

Question

A large, simple pendulum is on displayin the lobby of the United Nations building. If the pendulum is11.8 m in length, what is the least amount of time it takes for thebob to swing from a position of maximum displacement to theequilibrium position of the pendulum? (Assume that the accelerationof gravity is g = 9.81 m/s2 at the UNbuilding.) -------s A large, simple pendulum is on displayin the lobby of the United Nations building. If the pendulum is11.8 m in length, what is the least amount of time it takes for thebob to swing from a position of maximum displacement to theequilibrium position of the pendulum? (Assume that the accelerationof gravity is g = 9.81 m/s2 at the UNbuilding.) -------s -------s

Explanation / Answer

Given that the length of pendulum is L = 11.8 m
acceleration of gravity is g = 9.81m/s2
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Time period of pendulum is T = 2 (L/g)
                                             = 6.89 s

time it takes for the bob to swing from a position ofmaximum displacement to the equilibrium position of thependulum is t = T/2         = 3.44 s   

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