Physics > 2011 > 15
WASSCE
The radius of a wheel is 30.0 cm and that of its axle is 6.0 cm. Calculate the effort required to fit a load of 120.0 N using this machine, assuming 100% efficiency
A.
600.0 N
B.
40.0 N
C.
24.0 N
D.
20.0 N
Answer: C
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