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The angular velocity of body changes from 1 revolution per 16 seconds to 1 revolution per second without applying an external torque. The ratio of radii of gyration in two cases is : |
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Answer» Solution :Here `omega_(1)=2pixx(1)/(16)andomega_(2)=2pixx1` ALSO `I_(1)omega_(1)=I_(2)omega_(2)orMK_(1)^(2)omega_(1)=MK_(2)^(2)omega_(2)` `(K_(1))/(K_(2))=sqrt((omega_(2))/(omega_(1)))=sqrt((16)/(1))=(4)/(1)` |
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