Question

Hii Brainliacs.... Solve this question of Kinematics with complete solution (only b )
NO SPAMMING PLS..
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Answer 1

r=4cms, therefore, length or circular distance = 2πr = 8π 
Circular distance = 8π.[circumference =2πr ] 
Circular velocity = 8π/time =1 
Time = 8π { This is also time taken for one complete circle, therefore is Time period,T] 
Hence, T= 8π, 
We have, t= T/4
Hence, t= 8π/4 
or t= 2π seconds. 
Now, circular velocity, V = circular distance / t =8π/ 2π 
or, V= 4 cms /s is the answer.
Hope it will help u☺☺☺☺

Answer 2

You can go through that <Hope it helps>