Question

A particle is moving along a circular track of radius 10cm what is the distance traversed by the particle in two and a half revolution and find out resultant displacement

Answer 1

Hey.

Here is the answer.

r=10cm

distance covered in one revolution= 2πr

=2π10= 20π cm

distance travelled in half revolution

= 20π/2=10π cm

so, distance travelled in 2 and half revolution

= 2×20π + 10π = 50π cm = 157.00 cm

the displacement = diameter of the circle = 2r

as displacement is the shortest path between initial and final position

=2×10 cm= 20 cm

Thanks.