Inclined Plane Theory

[VCE_2012]

Can someone give me some theories about:
- Constant speeds
- Friction
- Acceleration
Regarding objects on inclined planes.

For example: when an object is traveling at a constant speed down the inclined plane the frictional force is equal the driving force OR the net force is zero  (correct me if I'm wrong).

[Phy124]

Yes, when an object has a constant velocity the net force on the object is equal to zero as it has no acceleration.

If a constant velocity isn't evident then the acceleration will be given by: (F_dts - F_uts)/(m).

Also remember that the friction will act in a way which opposes the motion of the object. So if the object was being pulled up the slope it would act down the slope, rather than up the slope in your case.

I drew this up which might help:



*Note;

F_net = Net force

F_dts = Force down the slope

F_uts = Force up the slope

F_r = Frictional force

mg = Weight force

N = Normal force

[Ndon95]

thanks my littlepony just what i need