Question

A body completes one revolution of a circular track of 4 m radius in 2 s. What will be the average velocity
of body?

Answer 1

Answer:

Average velocity = 0 m/s

Explanation:

Average velocity = Total Displacement / Total time

In the given case,

Total displacement = Shortest distance between inital and final point

Since, the body returns back to its initial position

Displacement = 0 m

Hence,

Total displacement = 0 m

Total time = 2 s

Therefore,

Average Velocity = Total Displacement / Total Time

Average Velocity = 0 / 2

Average Velocity = 0 m/s

Answer 2

$\large\underline{\sf{\red{Given:}}}$

$\sf{Revolution\:of\:circular\:track =4m}$

$\sf{Radius = 2s}$

$\large\underline{\sf{\red{To\:Find:}}}$

$\sf{Average\: velocity\:of\:body.}$

$\large\underline{\sf{\red{Solution:}}}$

Concept:

$\bigstar\: \sf{Body\: completes\:one\: revolution\:of\:a\: circular\:track.}$

$\bigstar\: \sf{Hence,\:body\: returns\:to\: original\: position.}$

$\sf{Hence\: Displacement\: =0}$

$\bigstar\: \sf{Average \:velocity\: refers\: to\: total\: displacement}$

$\sf{travelled\: by \:the\: object\: in\: total\: time.}$

$\sf{Mathematically,}$

$\sf{Average\: velocity\: \Large\ \frac{total \:displacement}{total\: time}.}$

Calculation:

$\dashrightarrow\: \sf{Average\: Velocity= \Large\ \frac{Displacement}{Time}.}$

$\dashrightarrow\: \sf{Average\: Velocity= 0/2}$

$\dashrightarrow\: \underline{\boxed{\bf{\orange{0m/s}}}}$

$\sf{Hence, \:Average\: Velocity\:of\:body= 0m/s .}$