ICSE Class 10 Physics 2017 Solved Paper

Question : 31 of 65

Marks: +1, -0

Efficiency of the pulley system.

Solution:

{\Efficiency}(η)\;=\;{\;\text " M.A. "\;}/{\;\text " V.R. "\;} × 100 \%

\;=\;{3.5}/{4} × 100 \%=87.5 \%

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