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A granophyre record is revolving with an angular velocity omega. A coin is placed at a distance r from the center of the record. The coefficient of static is. The coin will revolve if

  1. r equals g omega to the power of 2 end exponent    
  2. r less than omega to the power of 2 end exponent divided by g    
  3. r less than fraction numerator g over denominator omega to the power of 2 end exponent end fraction    
  4. r greater or equal than fraction numerator g over denominator omega to the power of 2 end exponent end fraction    

The correct answer is: r less than fraction numerator g over denominator omega to the power of 2 end exponent end fraction

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