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
Correct Answer: B. 13.3
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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