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

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics6. system of particles and rotational motion1 Mark
MCQ
A spherical solid ball of $10\,kg$ mass and radius $3\,cm$ is rotating about an axis passing through its centre with an angular velocity of $50\,radian/s$ the kinetic energy of rotation is ....... $J.$
  • A
    $4500$
  • B
    $90$
  • C
    $910$
  • ✓
    $450$
✓

Answer

Correct option: D.
$450$
d
${K_R}\, = \,\frac{1}{2}\,I{\omega ^2}$

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