Post-UTME Physics 2011 Objective — Question 3

Question 3 of 16 from the Post-UTME Screening (Post-UTME) Physics 2011 Objective paper, with the correct answer and a full explanation.

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
B. 13.3Correct
C. 17.5
D. 25

Explanation

MA = 5000/500 = 10. VR = MA/efficiency = 10/0.75 = 13.3. (Note: this question is a near-duplicate of one found in the FUTO 2013/2014 Type D session in this same PDF set; the same independently-worked answer is used here.)

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