particle moves in circle of radius 10 cm covering linear distance of 5 cm in time 2.5 second. find time taken for 10 revolutions?

Hello, I think I can help you!
First we will find the circumference of the circular path in which it is moving.
Circumference of the circle = 2πr
Here, π=22/7 , r= 10 cm
So circumference = 2×22/7×10 = 440/7
Speed = d/t
Speed = 5/2.5= 2cm/s
So, time = d/s
Time for 1 revolution = 440/7×2= 880/7 seconds
Time taken for 10 revolutions = 880/7×10
= 1257.14 seconds
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