Question

a particle moving in a circular path radius r, then the displacement after half a circle would be what?? explain

Answer 1

Let radius is of circle be r

Then distance covered will be half of the circumference that's

= circumference \ 2

= 2*pi*r\2

=pi*r

=3.14r

Now

Displacement.

Close your eyes and imagine the particle has completed a a half circle so what could be the shortest path possible between the initial and final position. ? I MEAN THE SHORTEST PATH. STRESS HERE.

ITS THE DIAMETER.

Therefore its 2r.

Answer 2

the displacement is the diameter = 2(radius)