A. 25N
B. 90N
C. 96N
D. 250N
E. 960N
Correct Answer:
Option D – 250N
Explanation
Efficiency = M.A/V.R x 100%
= 80/100
= 120 x 10/E
E = 250N
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![A load of mass 120kg 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]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A load of mass 120kg 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]")
