Новое решение
en/4.5.17.md
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| + | ### Statement | ||
| + | |||
| + | $4.5.17.$ [Insert the problem statement] | ||
| + | |||
| + | ### Solution | ||
| + | |||
| + | The pressure inside the droplet is the sum of the Laplace pressure and the pressure of the surrounding liquid. Let $x$ be the distance from the liquid surface to the point inside the droplet,then the pressure inside the droplet: | ||
| + | |||
| + | \begin{equation} | ||
| + | P(x)=\rho gx+\frac{2\sigma}{R} | ||
| + | \end{equation} | ||
| + | |||
| + | |||
| + | Now we see that the resulting function is linear,so we get that the pressure reaches the minimum value when $x=h-R$ and maximum value when $x=h+R$,so: | ||
| + | |||
| + | |||
| + | \begin{equation} | ||
| + | P_{max}=\rho g(h+R)+\frac{2\sigma}{R} | ||
| + | \end{equation} | ||
| + | |||
| + | \begin{equation} | ||
| + | P_{min}=\rho g(h-R)+\frac{2\sigma}{R} | ||
| + | \end{equation} | ||
| + | |||
| + | |||
| + | |||
| + | #### Answer | ||
| + | |||
| + | [Insert a concise answer or boxed result] | ||
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| ### Statement | |||
| $4.5.17.$ [Insert the problem statement] | |||
| ### Solution | |||
| The pressure inside the droplet is the sum of the Laplace pressure and the pressure of the surrounding liquid. Let $x$ be the distance from the liquid surface to the point inside the droplet,then the pressure inside the droplet: | |||
| \begin{equation} | |||
| P(x)=\rho gx+\frac{2\sigma}{R} | |||
| \end{equation} | |||
| Now we see that the resulting function is linear,so we get that the pressure reaches the minimum value when $x=h-R$ and maximum value when $x=h+R$,so: | |||
| \begin{equation} | |||
| P_{max}=\rho g(h+R)+\frac{2\sigma}{R} | |||
| \end{equation} | |||
| \begin{equation} | |||
| P_{min}=\rho g(h-R)+\frac{2\sigma}{R} | |||
| \end{equation} | |||
| #### Answer | |||
| [Insert a concise answer or boxed result] | |||