Question

While determining the time period of a simple pendulum, why is the time for 20 or more oscillations found?

Answer 1

HERE IS YOUR ANSWER MATE!!

It's because it's a judgement call when one period finishes and the next begins. Best practice is to set up some visual reference in the middle of the swing and time when the pendulum passes it, because that's well-defined in time and easy to see coming.HOPE U R CLEARED UP BY MY ANSWER IF IT HELPS U MARK IT AS BRAINLIEST TOO ...

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