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Introductory Physics Homework Help
Conceptual Question on Angular Momentum.
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[QUOTE="Sahil Kukreja, post: 5468524, member: 593300"] [h2]Homework Statement [/h2] [B] A Person sitting firmly over a rotating stool has his arms stretched. If he fold his arms, his angular momentum about the axis of rotation : A.) Increases B.) Decreases C.) Remains Unchanged D.) doubles [/B] [h2]Homework Equations[/h2] [/B]Conservation of Angular Momentum [h2]The Attempt at a Solution[/h2] [B]Since External Torque =0 Then final angular momentum = initial angular momentum => (C.) [/B] But I wanted to further ask that in the Equation L=I*(omega) since L has to be constant(if external torque = 0) then: If I increases then omega decreases to keep L constant or if omega increases then I decreases to keep constant [B] [U]Will folding his arms increase I( Moment of Inertia ) or decrease it??[/U][/B] [/QUOTE]
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Introductory Physics Homework Help
Conceptual Question on Angular Momentum.
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