29-06-2020
Physics

contestada

The pulley has an efficiency of 78%. How much useful work does the pulley do if you perform 775 J of work on the pulley

Respuesta :

MathPhys MathPhys

29-06-2020

Answer:

605 J

Explanation:

Efficiency = work out / work in

0.78 = W / 775 J

W = 605 J

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