Ask your own question, for FREE!
Mathematics 18 Online
OpenStudy (noahbred):

HELP PLEASE Silvia uses a lever to move a rock. She pushes the lever with 60 N-m of work, and it does 56 N-m of work to move the rock. What is the efficiency of the lever? (Be sure to correctly identify which number is input and which is output.) 7% 93% 107% 1.07%

OpenStudy (anonymous):

Input=60Nm Output=56Nm

OpenStudy (anonymous):

Formula for efficiency\[=\frac{ output }{ input }\times100~percent\]

OpenStudy (anonymous):

Now substitute the value into the formula

OpenStudy (anonymous):

\[efficiency=\frac{ 56 }{ 60 }\times100\]\[=?\]solve it @noahbred

OpenStudy (noahbred):

96.6666666666666666666666666666666666666666666666666666666666

OpenStudy (anonymous):

nope

OpenStudy (anonymous):

try again

OpenStudy (noahbred):

107

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!