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A wheel of radius 0.4 m can rotated freely about its axis as shown in the figure. A string is wrapped over its rim and a mass of 4 kg is hung, An angular acceleration of 8 rad- s to the power of negative 2 end exponent is produced in it due to the torque. Then moment inertia of the wheel is left parenthesis g equals 10 blank m s to the power of negative 2 end exponent right parenthesis

  1. 2 blank k g minus m to the power of 2 end exponent    
  2. 1 blank k g minus m to the power of 2 end exponent    
  3. 1.36 blank k g minus m to the power of 2 end exponent    
  4. 8 blank k g minus m to the power of 2 end exponent    

The correct answer is: 1.36 blank k g minus m to the power of 2 end exponent

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