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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Units and Measurement
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A child is standing with his two arms outstretched at the center of a turntable that is rotating about its central axis with an angular speed $w_0$ Now the child folds his hands back so that the moment of inertia becomes 3 times the intial values.The new angular speed is

$\begin{array}{1 1} 3w_0 \\ \frac{w_0}{3} \\ 6 w_0 \\ \frac{w_0}{6} \end{array} $

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