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RM@30 from RM@1
Just verifying my standing rigging specs before approving my order and need
someone to confirm my calculations. All the formulas I have found for standing rigging loads are based on RM@30 but all I have is RM@1. The formula for RM is RM=Displacement*GM* SIN but I don't have the metacenter height (GM) either so working backwards; RM/GM=Displacement*SIN therefore (I hated that word in 10 grade algebra) GM= RM/Displacement*SIN Substituting: GM=1952/24,400*.01745 GM=4.58 Now, to get RM@30: RM@30=55,931 (Say 60K lb.) Am I on the right track? -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com |