1.

A uniform rod AB of length 3r remains in equilibrium on a hemispherical bowl of radius r as shown in figure. Ignoring friction, the inclination of the rod \[\theta \]with the horizontal is

A. \[{{\cos }^{-1}}\left( 1/3 \right)\]
B. \[{{\sin }^{-1}}\left( 1/3 \right)\]
C. \[{{\cos }^{-1}}\left( 0.9 \right)\]
D. \[{{\sin }^{-1}}\left( 0.9 \right)\]
Answer» D. \[{{\sin }^{-1}}\left( 0.9 \right)\]


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