Question

A wheel of radius r is rolling on road what will be the displacement of point p after half rotation of wheel in the route

Answer 1

so for this if radius is r and it has travelled half distance than half of the distance isvonly left. displacement will take place

Answer 2

$p1 = \sqrt{(\pi r) {}^{2} +(2r) {} ^{2} } \\ = r \sqrt{\pi {}^{2} + 4 } \\ \tan(theta) = \frac{2r}{\pi r} = \frac{2}{\pi}$

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