Question

A particle starts from point A with constant speed v on a circle of radius R. Find the magnitude of average velocity during its journey from:-

1. A to B .
2. A to C .
3. A to D. ​

Answer 1

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Answer 2

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°°° Solution °°°

Answer -Aπ2v

Diameter=2×radius =2R

Distance covered = Half the circumference =πR

Speed =Distance / Time

Time = Distance / Speed =πR/V

Average Velocity = Total Displacement / Total Time

=2R×V/πR

=2V/π

Hence,

option (A) is correct answer.