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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

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  1. r equals g omega squared
  2. r less than omega squared divided by g
  3. r less than g over omega squared
  4. r greater or equal than g over omega squared

    Answer:The correct answer is: r less than g over omega squared

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