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Understanding Forces on Submerged Surfaces
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[QUOTE="256bits, post: 5391253, member: 328943"] Hi, werson tan. For 1, No he does not mean that Fh=Fv. It is confusing by what the author means by "vertical projection of the curved surface." The author himself does not explain it very well , so I do attribute some of fault of understanding to his in not referencing what he does actually means with the terms a vertical projection and horizontal projection. ( He is using the orientation of the plane for describing the projection rather than the direction of projecting the surface onto a plane. If he would have said "a projection onto a vertical plane" or "a projection onto a horizontal plane" it might have been more clear. ) If you take a look at Fig. 3-33, the vertical line where Fx is acting is the "vertical projection of the curved surface." For the author, a vertical projection to him is, - looking at the curved surface in the horizontal direction, the curved surface can be projected onto a vertical plane. This is where Fx acts. Similarly, for the author, a horizontal projection is, - looking at the curved surface in the vertical direction, the curved surface can be projected onto a horizontal plane. This is where Fy acts. Hope that helps. For some reason the connection terminated to PF around 0300hrs before I could post, so haruspex beat me in answereing. [/QUOTE]
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Understanding Forces on Submerged Surfaces
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