Question

A body moves in a
circular path of radius 20 cm. If it
completes two and half revolution along
the circular path, then find distance and
displacement of the body.​

Answer 1

Answer:

Then the body starts moving with the point where we took the radius and takes two complete round and one half round and comes to the opposite direction of the radius point. So, the displacement is the shortest distance between two points. ... So, Radius is 20cm and Diameter is (20×2 )cm = 40 cm.

Answer 2

Circumference = 2πr

Circumference of this circle= $2*3.14*20$

                                          = $125.6cm$

Distance = 125.6*2+62.8= 314cm

Displacement = 125.6/2 = 62.8cm