Recent content by John100861

  1. John100861

    David Morin classical mechanics Problem 2.6: Disk held up by a massless string

    Why does it depend on the length of the arc?
  2. John100861

    David Morin classical mechanics Problem 2.6: Disk held up by a massless string

    Hi thanks for your reply! Yes I'm defining that to be theta. Could you please elaborate on this? It's still not clear to me why I can't define N that way.
  3. John100861

    David Morin classical mechanics Problem 2.6: Disk held up by a massless string

    The first part is easy, we have 2T= Mg T= 0.5 Mg Now for the second part where I'm having trouble understanding Morin's solution: I take the normal force on a small circle arc to be N, we know that the y component of the normal force must be balance with Mg for the whole disk, therefore Ny =...