Why does a knife need to be pulled back and forth to cut things?

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Like what difference does the cutting motion do compared to just pushing down a knife ?

In: Physics

19 Answers

Anonymous 0 Comments

Moving it forward or backward while pressing down also changes the effective slope of the blade. Think of it like walking straight up a hill vs using switchbacks. By going at an angle, the slope is shallower or “sharper”.

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