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JAMB Physics 1988 Question 13

Question 13

Simple Machines

Which of the following graphs correctly describes the variation of the mechanical advantage with load for a simple machine whose velocity ratio is 3?

Diagram for this question
  1. A.A
  2. B.B
  3. C.C
  4. D.D
Show the answer and explanation

Answer: B (B)

Explanation

As the load grows, friction and the weight of moving parts matter less, so the MA rises quickly at first and then levels off below the velocity ratio, as in B.