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en/4.6.15.md
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| ### Statement | |||
| $4.6.15.$ What force acts on parallel square plates with side $a$, partially immersed in liquid, if the edge angle of their outer surfaces is $90^{\circ }$, and of their inner surfaces is $\theta$ and $\pi-\theta$ ? The density of the liquid $\rho$, its surface tension $\sigma$. | |||
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| ### Solution | |||
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| #### Answer | |||
| $F=\sigma a(1-\sin\theta)$ | |||
| unchanged lines 7 | |||
| @@ -1,8 +1,8 @@ | |||
| ### Statement | ### Statement | ||
| $4.6.15.$ What force acts on parallel square plates with side $a$, partially immersed in liquid, if the edge angle of their outer surfaces is $90^{\circ }$, and of their inner surfaces is $\theta$ and $\pi-\theta$ ? The density of the liquid $\rho$, its surface tension $\sigma$. | $4.6.15.$ What force acts on parallel square plates with side $a$, partially immersed in liquid, if the edge angle of their outer surfaces is $90^{\circ }$, and of their inner surfaces is $\theta$ and $\pi-\theta$ ? The density of the liquid $\rho$, its surface tension $\sigma$. | ||
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| ### Solution | ### Solution | ||
|  |  | ||
| #### Answer | #### Answer | ||
| $F=\sigma a(1-\sin\theta)$ | $F=\sigma a(1-\sin\theta)$ | ||
| unchanged lines 7 | |||