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6. system of particles and rotational motion — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics6. system of particles and rotational motion1 Mark
MCQ
The moment of inertia of a solid cylinder about its axis is $I$. It is allowed to roll down an incline without slipping. If its angular velocity at the bottom be $\omega $, then $K.E.$ of the cylinder will be
  • A
    $I{\omega ^2}$            
  • ✓
    $\frac{3}{2}I{\omega ^2}$       
  • C
    $2I{\omega ^2}$
  • D
    $\frac{1}{2}I{\omega ^2}$
✓

Answer

Correct option: B.
$\frac{3}{2}I{\omega ^2}$       
b

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