A simple pendulum hung from the calling of a trak moving at constant speed has a period `T` it the train start acceleration or decelerating then what be the effect on time period of pendulum ?A. Decreases only when train acceleratesB. Decreases only when train decaleratesC. Decreases in both casesD. Increases in both cases

A simple pendulum hung from the calling of a trak moving at constant s

1.	A simple pendulum hung from the calling of a trak moving at constant speed has a period `T` it the train start acceleration or decelerating then what be the effect on time period of pendulum ?A. Decreases only when train acceleratesB. Decreases only when train decaleratesC. Decreases in both casesD. Increases in both cases
Answer» Correct Answer - C `T = 2pi sqrt((1)/((vec g + vec a))) vec a` is in horizontal direction in both cases Hence `\|vec g + vec a\|gt g` so `T` decrease in both cases.

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