A machine of efficiency 80% is used to lift a box. If the effort applied by the machine is twice the weight of the box. Calculate the velocity ratio of the machine?

By: |Published on: May 19|Categories: Physics WAEC| 0 comments

A. 0.50
B. 0.63
C. 0.80
D. 1.60

Correct Answer: Option B

B. 0.63

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