Tessellate S.T.E.M.S - Physics - School - Set 3 - Problem 2

The end of a fixed rod connects to a hinge at depth h h below water.

Density of rod = 1 4 \dfrac{1}{4} gm/cc

Density of water = 1 gm/cc

Length of rod l = 3m

height = 1m

If α \alpha is the angle made by rod with the vertical then cos α \cos \alpha is ?


This problem is a part of Tessellate S.T.E.M.S.

1 2 \frac{1}{2} 3 2 \frac{\sqrt{3}}{2} 1 2 \frac{1}{\sqrt{2}} 2 3 \frac{2}{3}

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