Objects Speed og a cylinder and hoop

[missnuss]

Homework Statement

Consider both a cylinder of radius Rc and mass mc and a hoop of radius Rh and mass mh. If both are at top of a ramp of length L and at angle theta, what are the objects speeds at the bottom of the ramp

Homework Equations

The Attempt at a Solution

Well, I think that the cylinder will have the greatest speed at the bottom since I= 1/2MR^2 and the hoop is I=MR^2. I don't really get where to go though since we haven't tackled anything like this, just the above answer I put.

 

[ehild]

You have to give the speeds in terms of the given data. Use conservation of energy.

ehild