Новое решение

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+### Statement
+
+$3.2.37.$ [Insert the problem statement]
+
+### Solution
+
+When the ship is displaced by the distance $x$ deeper into the water, the extra buoyancy force $\rho_wgSx$ serves as the restoring force. Consequently, $\omega^2=\rho_wgS/m$, and
+
+\[m=\frac{\rho_wgS}{\omega^2}=\frac{\rho_wgST^2}{4\pi^2}.\]
+
+Thus,
+
+\[\Delta m\approx\frac{\rho_wgS\cdot2T\Delta T}{4\pi^2}.\]
+
+Using $T=7$ s and $\Delta T=0.5$ s, we find that the mass of the additional cargo is approximately $900$ tons.
+
+#### Answer
+
+[Insert a concise answer or boxed result]