Water is filled to a height $H$ behind a dam of width $w$. The resultant force on dam is ..............
Water is filled to a height $H$ behind a dam of width $w$. The resultant force on dam is ..............
- A
$\rho g w H^2$
- B
$\frac{1}{2} \rho g w H^2$
- C
$2 p g w H^2$
- D
$4 \rho g w H^2$
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