The string of a pendulum of length 𝑙 is displaced through 90° 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

April 17, 2022

by Ezee_Notes

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Physics Problems

Question : The string of a pendulum of length 𝑙 is displaced through 90° 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) 𝑚g

b) 6 𝑚g

c) 3 𝑚g

d) 5 𝑚g

Answer : option (C)

Solution :

The string of a pendulum of length 𝑙 is displaced through 90° 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