a load of mass120kg is raised vertically through a height of 2m in 30s by a machine whose efficiency is 100%. Calculate the power generated by the machine. [g = 10ms-2]
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Correct Answer: Option B
Explanation:
p = \(\frac{mgh}{t} = \frac{120 \times 10 \times 2}{30} = 80W\)
p = \(\frac{mgh}{t} = \frac{120 \times 10 \times 2}{30} = 80W\)