A 10 m beam of mass 330 kg extends over a ledge. A 53 kg student intends to position the beam so that he can walk to the end of it.

A 10 m beam of mass 330 kg extends over a ledge. The beam is not attached, but simply rests on the surface. A 53 kg student intends to position the beam so that he can walk to the end of it. How far from the edge of the ledge can the beam extend?