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You input 75 J of work with a wedge. If the wedge does 65 J of useful work, what if the efficiency of the wedge ?

Respuesta :

Histrionicus

Answer:

Efficiency of wedge is the ratio of "work done by the machine to the work supplied to the machine".

           Efficiency (η) = Work done by machine ÷ Work supplied

                                  = 65 ÷ 75

                                 = 0.86%

Efficiency of wedge is 86%

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