aracelynicole777
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pulley A requires 100 J of input work, but has an output work of 75 J. Pulley B requires 100 J of input work, but has an output work of 80 J. what is the efficiency percentage of Pulley A?

Respuesta :

ardni313

The efficiency percentage of Pulley A : 75%

Further explanation

Given

input work = 100 J

output work = 75 J

Required

the efficiency

Solution

The efficiency percentage : the ratio of output work to input work

The efficiency of Pulley A :

[tex]\tt \%efficiency=\dfrac{out}{in}\times 100\%\\\\\%efficiency=\dfrac{75}{100}\times 100\%\\\\\%efficiency=75\%[/tex]

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