Question

particle moving along a circular path with uniform speed completes one revolution in 4 min. radius of circle is 50m. it starts from a find distance displacement avg.vel avg. speed when it reaches. b,c,d
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Answer 1

Answer:

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Step-by-step explanation:

As the average acceleration is change in velocity over the time taken,

In this case when the half revolution is over the direction in the speed changes by 180 degrees,

so the change in velocity =5−(−5)=10 m/s

The time taken to cover this distance =

5

π∗r

=

5

5π

=π (as the distance travelled is semicircle)

So, average acceleration =

π

10

ms

−2

Answer 2

Step-by-step explanation:

10/πms

−2

As the average acceleration is change in velocity over the time taken,

In this case when the half revolution is over the direction in the speed changes by 180 degrees,

so the change in velocity =5−(−5)=10 m/s

The time taken to cover this distance =

5

π∗r

=

5

5π

=π (as the distance travelled is semicircle)

So, average acceleration =

π

10

ms

−