Question

a body revolves a stone tied to a string 50 cm long find the distance and displacement covered by the stone in completing one Revolution from the starting point​

Answer 1

a body revolves a stone tied to a string 50 cm. so, radius of circle made by stone tied to a string is r = 50cm or 0.5m

we have to find distance and displacement covered by the stone in completing one revolution.

after one revolution

final position = initial position

so, displacement = (final position - Initial position) = 0

distance is the length covered by particle. so, distance after one revolution = circumference of circle of radius r = 0.5m

= 2π r = 2π(0.5) = π m