I'm trying to think up situations that will help me understand more complicated situations...(adsbygoogle = window.adsbygoogle || []).push({});

Let's say I have:

a box

on a slanted slope

on a chair

on the floor

The floor exerts a normal force on the chair. But, equal to what?

is it:

a box [tex]m_{1}gcos\theta[/tex]

on a slanted slope [tex]m_{2}g[/tex]

on a chair [tex]m_{3}g[/tex]

on the floor

Is it the sum of these?

Also, would motion of the box along the inclined plane affect the result? It would seem to be "no".

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Normal Force

**Physics Forums | Science Articles, Homework Help, Discussion**