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Chilukuri Sai Kartik Grade: 12
        

A particle moves in circle of radius R=21/22m with const. speed of 1m/s. Find:


a) Magnitude of avge.velocity=?


b)Magnitude of avge.Acceleration in 2sec=?

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear Chilukuri


distance travell in 2 sec = 1* 2 =2m


   angel made in 2 sec = 2/21/22 radian


                                =2*22/21  * 180 *7/22  degree


                               = 120 degree


avg  velocity = total distance /time


                  = (√3 /2  * 21/22)/2  =.413  m/sec


avg acceleration  = change in velocity /time


                        =| 1 i  -(-√3 /2 i - 1/2 j)|/2


                        =|3/2 i+√3 /2j|/2


                        =√3/4  m/sec2


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Badiuddin

7 years ago
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