Recent content by dwinsemius

  1. dwinsemius

    Coin rolling on another coin, when will free fall occur?

    Homework Statement Doing this from a memory of a final exam question from freshman physics that I could not solve 45+ years ago. A coin of radius R is poised at the top of another (fixed) coin of radius 2R. If it rolls with no slip, at what point will the top coin leave the lower coin. (I...