What is the distance travelled by a body and its displacement when it completes one revolution around a circular track with radius r? Options: A . &nbsp Distance and displacement are both same and equal to 0 B . &nbsp Distance and displacement are both same and equal to 2 πr C . &nbsp Distance = 0 and displacement = 2 πr D . &nbsp Distance = 2 πr and displacement = 0

What is the distance travelled by a body and its displacement when i

Question

What is the distance travelled by a body and its displacement when it completes one revolution around a circular track with radius r?

Options:

A . Distance and displacement are both same and equal to 0

B . Distance and displacement are both same and equal to 2πr

C . Distance = 0 and displacement = 2πr

D . Distance = 2πr and displacement = 0

Answer: Option D
:
D

Distance only depends on the magnitude and is equal to the total path covered.
Here, distance = perimeter of the circular track = 2πr

Displacement depends on both magnitude and direction.
It depends only on the initial and final positions of the body and when you join initial and final points with a straight line, it gives the displacement of the body.
Here initial and final positions are the same, hence displacement is zero.

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