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A simple machine with an efficiency of 75% lifts a load of 5000N when a...

Physics
WAEC 2001

A simple machine with an efficiency of 75% lifts a load of 5000N when a force of 500N is applied to it. Calculate the velocity ratio of the machine
  • A. 10.0
  • B. 13.3
  • C. 17.5
  • D. 25.0
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Correct Answer: Option B
Explanation
M.A = \(\frac{load}{effort} \frac{5000N}{500N} = 10\)

V.R = \(\frac{M.A \times 100}{V} = \frac{10 \times 100}{75} = 13.3\)

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