Multiple choice

What happens when the height of an inclined plane decreases?

  1. The mechanical advantage and effort both decrease.

  2. The mechanical advantage and effort both increase.

  3. The mechanical advantage increases, but effort decreases.

  4. The mechanical advantage decreases, but effort increases.

  5. It will not have any effect on the mechanical advantage.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The mechanical advantage of an inclined plane is the ratio of the length of the plank to the vertical height of the load raised. So, when the height of an inclined plane decreases, the mechanical advantage increases, but the effort decreases.

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