Suppose a man pushes a crate with a force of 20 N north. What is the magnitude and direction of the reaction force?
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The tip of the fan moves through the outer side of the circle.
So it moves a distance of perimeter of circle in one revolution.
Perimeter of circle = 2r, where r is the radius of circle.
In this case radius of circular motion = 0.19 meter
So perimeter of circle = 2*0.19 = 0.38
= 1.194 m
So distance does the tip move in one revolution = 1.194 meter