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A thin uniform rod AB of mass m and length l is hinged at one end to the level floor and stands vertically. If it s allowed to fall, with what angular velocity will it strike the floor?A. `sqrt((3g)/(L))`B. `sqrt(3gL)`C. `sqrt((L)/(3g))`D. `sqrt((g)/(3L))` |
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Answer» Correct Answer - B `Mg(1)/(2)=(1)/(2) (mL^(2))/(3) omega^(2) rArr omega =sqrt((3g)/(L))` `V=omega L=sqrt(3gL)` |
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