Question

A body is moving along a circular path of radius R. What will be the distance travelled
and displacement of the body when it completes half a revolution?

Answer 1

displacement =2R ( which is also equal to the diameter)
distance =22/7*R (pie*R)

Answer 2

The distance and the distance travelled and displacement of the body is 22R\7.

Given:

A body is moving along a circular path of radius R.

To Find:

The distance travelled and displacement of the body when it completes half a revolution.

Solution:

To find the distance travelled

and displacement of the body when it completes half a revolution we will follow the following steps.

As we know,

Perimeter = 2πR

And one revolution is 2πR.

Half revolution is the half of perimeter = π R =

$\frac{22}{7} R$

Distance is the total path covered while displacement is the shortest distance travelled.

In this case, the total distance is

$\frac{22}{7} R$

Displacement is equal to distance because the shortest distance is the same as that of distance.

Displacement=

$\frac{22}{7} R$

Henceforth, the distance and the distance travelled and displacement of the body is 22R\7.