2011
Physics
67e856d33cf20db308447ec1
A wheel and axle is used to raise a weight of 600n with an effort of 300n. if the radii of the wheel and axle are 50 cm and 10 cm respectively, what is the efficiency of the system
A.
40%
B.
50%
C.
20%
D.
10%
Correct Answer: 40%
Explanation
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