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Question Number 69878 by jagannath19 last updated on 28/Sep/19

Commented by mr W last updated on 29/Sep/19

$(3) I$
Commented by jagannath19 last updated on 29/Sep/19

$s i r c a n y o u p l e a s e t e l l h o w$
Commented by mr W last updated on 29/Sep/19

$c i r c u l a r r i n g o f m a s s M a n d r a d i u s R$ $h a s t h e M o I = I_{c i r c u l a r r i n g}$ $I_{c i r c u l a r r i n g} = \int r^{2} d m = R^{2} \int d m = R^{2} M = I$ $M o I o f s e m i - c i r c u l a r r i n g = I_{s e m i}$ $I_{s e m i} = \int r^{2} d m = R^{2} \int d m = R^{2} M = I$ $b o t h r i n g s h a v e t h e s a m e M o I .$ $t h i s i s e a s y t o s e e : t h e y h a v e t h e$ $s a m e m a s s M, t h e i r m a s s h a s t h e$ $s a m e d i s t a n c e t o t h e r e f e r e n c e a x i s,$ $M o I i s t h e p r o d u c t o f m a s s a n d s q u a r e$ $o f d i s t a n c e, t h e r e f o r e t h e i r M o I i s$ $t h e s a m e .$
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