What does a submarine do to get up and down by changing itself? Submarines rise and sink by changing their own gravity. In water, submarines are subjected to buoyancy and gravity. _F float = P water V row g, the volume of submarine remains unchanged, and the volume of discharged water remains unchanged. _Submarine buoyancy remains unchanged when subjected to water; Compressed air is pressed into the pressure chamber of the submarine, and the sea water is discharged. The weight G of the submarine decreases. When F floats > G, the submarine floats. Open the valve of the pressure chamber and let the sea water enter the pressure chamber. The submarine's weight G increases. When F floats below G, the submarine sinks. When F floats = G, the submarine is suspended and can stay at any depth. Thus, submarines can rise and sink by changing their own gravity.

docxDoc Submarines rise and sink by changing what they are.

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Submarines rise and sink by changing what they are. Page 1 Submarines rise and sink by changing what they are. Page 2 Submarines rise and sink by changing what they are. Page 3 Submarines rise and sink by changing what they are. Page 4
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