After seeing some of the problems that you are asking help on, i feel really stupid, since mine seem so simple compared to yours. but here it is anyway
I am really having trouble with Friction here, how exactly do u get the coefficient of kinetic friction? I have 2 problems here:
1)A box...
Im doing a problem with variable frictional forces.
My main equation is -mkv^2=F . We are to assume the force driving the object remains constant, kinda like a boat on the lake full bore.
So, I set my F=ma equation up.
-mkv^2=m(dv/dt)
Next I removed m and inverted both equations to...
I have a question regarding frictional force, and how it is related to a contact area.
Last week our professor mentioned that the frictional force between an object and a surface is independant of the surface area in contact.
If this is true, then why do vehicles in motorsports want to...
There's a disagreement going on in my department regarding whether the static frictional force does any work. My argument rests on the fact that static friction has zero displacement, hence zero work.
The other side gives the example of a system consisting of a block on a piece of paper...