Which one of the following is not periodic mo | vedclass

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(D) Periodic motion is defined as motion that repeats itself at regular intervals of time.$1$. The rotation of the earth about its axis repeats every

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An arrow released from a bow

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(D) Periodic motion is defined as motion that repeats itself at regular intervals of time.$1$. The rotation of the earth about its axis repeats every $24$ hours.$2$. $A$ freely suspended bar magnet displaced from its $N-S$ direction and released performs oscillations,which is a type of periodic motion.$3$. The motion of the hands of a clock repeats at fixed intervals.$4$. An arrow released from a bow moves in a straight line (or projectile path) and does not repeat its motion at regular intervals. Therefore,it is not periodic motion.

Which one of the following is not periodic motion?

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