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A rod of mass `m` and length `l` is rotating about a fixed point in the ceiling with an angular velocity `omega` as shown in the figure. The rod maintains a constant angle `theta` with the vertical. What angle will the rod make with the vertical A. `cos^(-1)((g)/(omega^(2)l))`B. `cos^(-1)((2g)/(3omega^(2)l))`C. `cos^(-1)((3g)/(2omega^(2)l))`D. `cos^(-1)((3g)/(4omega^(2)l))` |
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Answer» `tau=(dL)/(dt)` `Mg.(L)/(2)sintheta=(mu omega^(2)l^(2))/(6)sin(2theta)` `rArrcostheta=((3g)/(2omega^(2)l))` or, `theta=cos^(-1)((3g)/(2omega^(2)l))` |
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