If you had a 10 foot beam that you were using for a type 2 lever and wanted a mechanical advantage of 4, where would you put the fulcrum and the Rf?
+36916 Rf is the mass? Fulcrum at the far end mass 2.5 ft from moving end ?
^
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|_________7.5ft __________________|-m-|____2.5 ft______
^f
