Question

1.A body moves around a circular path of radius R. Find displacement of body
after
i) 2020 revolutions
ii) 2020 3/4revolution

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Answer 1

Answer:

zero

11R/7

Step-by-step explanation:

completion of each revolution it reaches starting position

so after completion of 2020 revolutions

displacement zero

perimeter of circle=2piR

after completion of 2020 3/4 revolution displacement=2piR/4=2*(22/7)*R/4 = 11R/7