The string of pendulum of length 𝑙 is displaced through 90Β° from the vertical and released. Then the minimum strength of the string in order to withstand the tension, as the pendulum passes through the mean position is

Question: The string of pendulum of length 𝑙 is displaced through 90Β° from the vertical and released. Then the minimum strength of the string in order to withstand the tension, as the pendulum passes through the mean position is

(A) π‘šπ‘”

(B) 3π‘šπ‘”

(C) 5 π‘šπ‘”

(D) 6 π‘š

Answer: option(B)

solution:

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