Mwahaha :D
New member
First: Static friction and kinetic friction on an inclined plane. Which is the parallel force and which is the perpendicular one?
I thought static friction would be the parallel force because you have to overcome the incline's sideways force between the object and the surface, and kinetic friction would be the the perpendicular force because you need to overcome gravity.
But apparently this is WRONG. Please explain.
Also, when given the angle above the horizontal, you use sin for the parallel force and cos for the perpendicular force, right? I'm pretty sure this is right because I checked with similar triangles and whatnot, but if someone could confirm, that'd be awesome.
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Second: I'm sure this is a dumb question, but what's the difference between the net force and the normal force?
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Third: Another dumb question. What's the relationship between the static friction, kinetic friction, and net force?
Is it...
Fs-Fk=Fnet
Fk-Fs=Fnet
Fs+Fk=Fnet
...? D:
I thought static friction would be the parallel force because you have to overcome the incline's sideways force between the object and the surface, and kinetic friction would be the the perpendicular force because you need to overcome gravity.
But apparently this is WRONG. Please explain.
Also, when given the angle above the horizontal, you use sin for the parallel force and cos for the perpendicular force, right? I'm pretty sure this is right because I checked with similar triangles and whatnot, but if someone could confirm, that'd be awesome.
-----------------------------
Second: I'm sure this is a dumb question, but what's the difference between the net force and the normal force?
----------------------------
Third: Another dumb question. What's the relationship between the static friction, kinetic friction, and net force?
Is it...
Fs-Fk=Fnet
Fk-Fs=Fnet
Fs+Fk=Fnet
...? D: