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ASVAB · Simple Machines (Levers, Pulleys, Gears)

A lever has a 6-foot effort arm and a 2-foot load arm. What is the mechanical advantage?

Correct answer

3

  1. A 1
  2. B 2
  3. C 3
  4. D 4

Why this is the answer

MA (lever) = effort arm ÷ load arm = 6 ÷ 2 = 3. A mechanical advantage of 3 means 1 pound of effort lifts 3 pounds of load.
Source: ASVAB MC, Levers

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