In Progress
Skill 2 of 10
In Progress

Normal force

We all know that surfaces are able to “hold back” when carrying stuff and when burdened, squeezed or pushed. If they couldn’t, they would break.

  • A table holds up a book with a “holding up” force and
  • a wall holds back sideways against you leaning on it with a “holding back” force.

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  1. Online Etymology Dictionary’ (dictionary), Douglas Harper,
  2. Sears and Zemansky’s Univesity Physics with Modern Physics’ (book), Hugh D. Young & Roger A. Freedman, Pearson Education, 13th ed., 2012