A spherical solid ball of 10 ,kg mass and radius 3 ,cm is rotatin… - Vidyadip

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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