The key words here are centripetal sound force.
You see that the children are being pushed outwards
Newton's first law explains why the objects on a carousel move in a circular rather than straight path - the centripetal force of the rotating platform counters the object's natural motion to move in a straight line and keeps the objects traveling in a circular motion FROM the centre.
edited source not the picture
Easy example
Check nobody is near. Pick up skipping rope from the middle and swing the handles around above your head.
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