A machine of velocity ratio 5 is used in lifting a load with an effort
PHYSICS
WAEC 2004
A machine of velocity ratio 5 is used in lifting a load with an effort of 500N. If the machine is 80% efficient. Determine the magnitude of load
- A. 2500N
- B. 2000N
- C. 900N
- D. 625N
Correct Answer: B. 2000N
Explanation
M.A = \(\frac{Eff \times V.r}{100} = \frac{80 \times 5}{100} = 4\)
Load = effort x M.A
= 4 x 500 = 2000N
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