A pendulum is hung from the rod of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator. The acceleration of the bob of the pendulum is 20 m"/"s^(2) at a distance of 5 m from the mean position. The period of oscillation is...........

A pendulum is hung from the rod of a sufficiently high building and is

1.	A pendulum is hung from the rod of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator. The acceleration of the bob of the pendulum is 20 m"/"s^(2) at a distance of 5 m from the mean position. The period of oscillation is...........
Answer» `1s` `2pi s` `2s` `pi s` Solution :`\|a\| = W^(2) x` `20= W^(2) XX 5` `therefore W^(2) =(20)/(5)= 4` `therefore W= 2` `therefore (2pi)/(T)= 2` `therefore T= (2pi)/(2)` `therefore T= pi s`.