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A body covered a distance of x meter along a semi circular path.Calculate the magnitude of displacement of the body,and the ratio of distance to




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As the body covered the arc length of the semicircle ,  the distance traveled is equal to    π * R ,  where R = radius of circle..

  x = π R

Since he particle started from one end of the diameter to the other end of the diameter,  the displacement magnitude =  diameter = 2 R

     Displacement = 2 x /π

Ratio of distance / magnitude of displacement =    π/2

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