Question

a particle moving on a circle has a velocity of 5m/s and a normal acceleration of 10m/s determine the radius of the circle​

Answer 1

Answer:

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