Give reason if standing on a revolving merry-go-round we do not hold its string we fall outwards
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A force is required to to hold a massive object in a circular path.
This force is called centripetal force and is directed towards the center of the circle.
Newton's first Law requires a force to change the velocity (change in speed and/or direction) of a body in motion.
Without an external force (the string) the person's center of gravity would continue moving in a straight line and thus fall away from the merry-go-round.
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