Question

Q. If a coin of diameter 6cm is revolved with the average speed of 0.5 m/s for 10sec.

Find the number of rotation,it will complete in that time period.

Answer 1

Solution:

Distance covered in 10 second with speed of 0.5m/s

= 0.5*10

= 5m= 500 cm

Now, Distance coverd in 1 revolution:

= 2*pi*3 [Radius= 3 cm

= 6* 3.14

= 18.84 cm

Now, number of revolution= 500/18.84= 26.5

so, there are 26 revolution will take.

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Hope it helps☺

#Amrit⭐