Question

A body moves in a circular path of radius 20 cm if it completes two and half revolution alog circular path find distance and displacement of body

Answer 1

Distance is 3.14m/314cm and Displacement is 0.4m/40cm

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Answer 2

distance =2πr

it revolved 5/2 of revolution

d=2πr×5/2=5×3.14×20=314 cm

now displacement

for 2 revolution displacement is 0

for 1/2 revolution we should find displacement

S=2πr

S=2πr×1/2=πr

=3.14×20=62.8cm