Question on: JAMB Physics - 1992
A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the
A
80%
B
75%
C
50%
D
33%
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Correct Option: B
(\frac{500 \times 1.5}{100.0}) x 100%
= 75%
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