Physics > 2015 > 18
WASSCE
The diagram illustrates a block and tackle pulley system in which an effort (N) supports a load of 100.0N. If the efficiency of the machine is 75%, calculate the value of N.
A.
22.2 N
B.
38.0 N
C.
67.0 N
D.
75.0 N
Answer: A
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