I created a half-pipe kind of object by using a curve, and then selecting another curve as the bevel object. I went to the modifiers and the physics section to add a rigidbody modifier. In both cases there isn’t a selection option for either. Do I need to convert it to something else first?
I answered my own question. It does need to be converted to a mesh - I did not see that option until after I posted the question. Works as expected. Once converted to a mesh, the nice curve controls no longer exist, so a duplicate created before converting would be a good idea.