Question

A particle is moving in a circular path track of radius R. Calculate the distance and displacement
(a) For 1/4 revolution
(b) For 1/2 revolution
(c) For 3/4 revolution
(D) For one complete revolution
(e) 3/4 revolution

Answer 1

As we know displacement is shortest path so

a) In 1/4 revolution shortest path is radius soanswer is R

b) In 1/2 revolution shortest path is diameter so answer is 2R

C)For 3/4 revolution R

c) For one complete revolution displaxement is zero

Now distance is actual path travelled

a) 2πR/4 =πR/2

b) 2πR/2=πR

C)2πR×3/4 =3πR/2

D) 2πR

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