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JAMB Physics 1987 Question 13

Question 13

Simple Machines

The mechanical advantage (MA) of an inclined plane depends on

  1. A.its length
  2. B.its height
  3. C.the product of its length and height
  4. D.the ratio of its length to its height.
Show the answer and explanation

Answer: D (the ratio of its length to its height.)

Explanation

For an ideal inclined plane, MA = load/effort = length/height, so it depends on the ratio of length to height.