Give reason :

The motion of spring is considered as an oscillatory periodic motion

It follows the definition of oscillatory motion

Explanation:

The oscillatory motion is the motion between two fixed points in a fixed interval of time . In this case the spring moves up and down or it can move in left to right in fixed interval of time . That is why , it is called the periodic motion , because it is repeated after fixed interval of time .

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a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015