Question

a body covers one complete round of a circular park of circumference 176m in 4 4 min .Find displacement of the body in 6 min

Answer 1

Body covers the distance of one revolution in 4 minutes and in 6 minutes it would have covered half the circumference of the circle more. Now since displacement is a vector with shortest Path hence the shortest path joining the initial and the final point will be the diameter of the circle

2πr= 176

2r= 176/π

2r= 56

Since diameter was the diaplacement and d=2r

Hence displacement is 56m.

Answer 2

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