Solving a Rollercoaster Problem: Confirmation Needed

[Jason03]

Heres the problem

http://i14.photobucket.com/albums/a322/guitaristx/rollercoaster.jpg

heres the work I completed, I solved the first part for A on page 1

http://i14.photobucket.com/albums/a322/guitaristx/rollerwork.jpg

But for solving after C on the downslope, I am not as confident, do my FBD's look ok, is mg and N reversed?...

http://i14.photobucket.com/albums/a322/guitaristx/rollerwork2.jpg

Thanks

 

[Doc Al]

But for solving after C on the downslope, I am not as confident, do my FBD's look ok, is mg and N reversed?...

Not sure at what point you're solving for, but mg always points down and N always points normal to and out of the surface.