Question

An object is moving on a circular path of radius 14 cm . Find the
(i)distance and (ii) displacement covered by the object after two
revolutions.​

Answer 1

Answer:

Very simple. Displacement is a vector quantity whose magnitude is the shortest distance between initial and final positions while the distance is the length of the path followed between the initial and final positions.

After completing two rounds, the object comes back to its initial position, so the displacement is zero. The length of the path followed is two times the circumference of the circular path. So the distance covered by the object in two rounds is

s=2×2πr

=4×227×14

=176m