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				   A solid body starts rotating about a stationary axis with an angular acceleration 

a =(0.02)t rad/second square, here t is in seconds. How soon after the beginning of rotation, will the total acceleration vector of an arbitrary point of the body form an angle ?=60, with its velocity vector?

6 years ago


Answers : (1)


Dear pavan

To get angle 60 with velocity vector

ar/an= tan60

=>w^2r/ran = 3^0.5

=> w^2 = an*3^0.5

=>w= 0.186

t=w/an(initial w=0)


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6 years ago

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