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nature-of-code / noc-book

The Nature of Code book (archived repo, see README for new repo / build system!)
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Normal Force Direction #115

Closed drguildo closed 5 years ago

drguildo commented 8 years ago

In section 2.7 it says:

where the object is moving along a surface at an angle, computing the normal force is a bit more complicated because it doesn’t point in the same direction as gravity

but from reading the preceding paragraph it's made to sound like, generally and when there isn't a slope, the normal force would point in the opposite direction to gravity:

The vehicle pushes down against the road with gravity, and Newton’s third law tells us that the road in turn pushes back against the vehicle. That’s the normal force.

shiffman commented 5 years ago

I've improved this a little bit (I think).