Recent content by Joshua Smith

I have a question about this with friction. If you added friction between the two cylinders then there would be a tangential force acting at the point where the normal force touches to counteract the rolling of the cylinder but then the force balance wouldn't work out? How is this rectified...

oops. I copy pasted and modified which led to me forgetting to take out the = 0.

There will be a moment about the x-axis caused by the y component of the A force ∑Fx = 0, ∑Fy = Ay - Ny = 0, ∑Fz = Az - Nz = 0, ∑Mx = -Ay * za = 0

since the outer cylinder is fixed the inner cylinder can't move so the forces should sum to zero, but it could rotate about x

so In that case it doesn't matter where the A force originate, just its angle? it would like this then?

Homework Statement a cylinder sits inside of another fixed cylinder without friction and an internal force acts on the cylinder as shown in the diagram. Draw the normal force vector and write down the force and moment equations. I drew in my normal vector to counteract the A force vector and...