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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?

 May 11, 2020
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Rf is the mass?       Fulcrum at the far end    mass  2.5 ft from moving end ?

^

|

|_________7.5ft __________________|-m-|____2.5 ft______

                                                                                                 ^f

 May 11, 2020

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