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you pull up a 75 N bucket using a fixed pulley. the rope does not stretch, so the effort and resistance are the same. however you must exert an 80 N force because of friction. find the efficiency.
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Mar 25, 2023
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you pull up a 75 N bucket using a fixed pulley. the rope does not stretch, so the effort and resistance are the same. however you must exert an 80 N force because of friction. find the efficiency.
Physics
high-school
Rory Alsop
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Answer:
94% efficiency
Step-by-step explanation:
The equation needed:
Efficiency = Energy Output/Energy Input | (Eo)/(Ei)
75N = Output | 80N = Input
(75)/(80) = 0.9375
Simplify = 0.94
Convert to Percentage 0.94 = 94% (Move two decimals to the right)
Sloriot
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Mar 30, 2023
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Sloriot
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