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Physics Chemistry

Entry Test MCQ :: Circular Motion

  If a wheel of radius r turns through an angle of 30? then the distance through which any point on its rim moves is
[A]. ? /3 x r[B]. ?/6 x r
[C]. ?/30 x r[D]. ? / 180 x r

Answer: Option B
iltaf said:    
 
plz explain formula
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