What do you mean by second\'s pendulum?

1.	What do you mean by second\'s pendulum?
Answer» Kuch nhi Kya hua , It\'s my pleasure ? Thnx A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 12 Hz. A pendulum is a weight suspended from a pivot so that it can swing freely.

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