Question

31. A particle is moving in a circular path of radius r. The displacement after half a circle would be

1 point

1) zero

2) 22/7 x r

3) 2 r

4) 2 x 22/7 x r​

Answer 1

Answer:

The answer will be 2r.

After the particle covers half path of the circle, the displacement can be easily calculated by measuring the distance between initial and final points. Displacement after half circle = AB=OA + OB Hence, the displacement after half circle is 2r.

Answer 2

Zero because the particle came to its initial position