Putnam 1958 February A2
Source: Putnam 1958 February
July 18, 2022
Putnamgeometry3D geometryspherephysics
Problem Statement
Two uniform solid spheres of equal radii are so placed that one is directly above the other. The bottom sphere is fixed, and the top sphere, initially at rest, rolls off. At what point will contact between the two spheres be "lost"? Assume the coefficient of friction is such that no slipping occurs.