Rotational & Translational KE & Gravitational Potential E

[SailCrazy]

I'm trying to figure out a question involving rolling a ball in a half pipe, half of which is a "with friction" surface & half is a frictionless surface.

I don't want to duplicate my post in the pre-all forum, so if you would please follow this link and check it out, I'd greatly appreciate it!

http://forums.studentdoctor.net/showthread.php?t=116701

Thanks for your help! It could earn me a few bonus points on my exam...

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[SailCrazy]

I could still use some help on this one, so check it out if you have some extra time, please...