A particle is moving in a circle of diameter 5cm. What is the displacement and distance when it completes 1 1/2 revolutions?
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Answer:
Displacement is 10 cm
Distance is 55π cm
Explanation:
Displacement is the shortest distance travelled between two points that depends only on initial and final position of particle and is independent of path taken
Here final position after 11/2 revolution is diametrically opposite end of circle hence displacement is 2r that is 10 cm
Distance travelled in one revolution is circumference of circle that is 2πr
So distance is 11/2*2πr = 55πcm
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