Two simple pendulums of lengths 5 m and 20 m respectively are given small displacement in one direction at the same time they will again be in the same sense when the pendulum of shorter length has completed n oscillations. Then, n is

Question

Two simple pendulums of lengths 5 m and 20 m respectively are given small displacement in one direction at the same time they will again be in the same sense when the pendulum of shorter length has completed n oscillations. Then, n is, 5, 1, 2, 3

MARKS App · Accepted Answer

According to question n 1 T 1 = n 2 T 2 ⇒ n · 2 π 5 g = n - 1 2 π 20 g n n - 1 = 2 ⇒ n = 2

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