Question

A particle is moving in a circular path of radius R find the displacement of particle after a complete round​

Answer 1

Answer:

Where r is radius of circle. When particle covers half the circle, it is diametrically opposite to the starting point of its motion. Therefore shortest distance is equal to diameter of circle or 2× r is a displacement. Hence displacement is equal to diameter or 2 times the radius of circle.

Answer 2

The displacement is zero as the initial and the final point of the particle is the same

Displacement is the shortest distance travelled by the particle from initial point to final point

As the initial and final point is same the displacement is zero

I hope this helps ( ╹▽╹ )