A simple pendulum of frequency f has a metal bob.If the bob us negatively charged and is allowed to oscillate with a posively charged plate under it , the frequency will.?
Ans)
DUE TO ATTRACTION THERE WILL BE TWO ACCLERATION ONE ACCELERATION DUE TO GRAVITY AND ACCELERATION DUE TO ATTRACTION THEREFORE ''G'' EFFECTIVE WILL DECREASE HENCE TIME PERIOD WILL INCREASE AND HENCE FREQUENCY WILL DECREASE.