Question

A particle is moving in a circular path of radius ' r ' .What is the distance covered and displacement of the object after covering half the circle ?

Answer 1

Dear student

Since distance is nothing but the total path length covered by that object. So, after completing half of the circular path or radius "r", distance travelled by particle = (2*pi*r)/2= pi*r

After covering half of Circle , The particle will be at diametrically opposite end.

AS WE KNOW,
DISPLACEMENT is the shortest distance between initial and final positions of object .

SO THE DISPLACEMENT OF OBJECT = DIAMETER OF CIRCLE =
2 * RADIUS =
2*r=
2r .

Regards