1. The problem statement, all variables and given/known data https://online-s.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?courses/phys211/spring09/homework/11/two-beams/fig3a.gif [Broken] Two identical uniform beams, each of mass "M" and length "L", are symmetrically set up against each other on a floor with which they have a coefficient of static friction "u". The acceleration due to gravity is "g". Find the minimum angle θmin that the beams can make with the floor without falling. 2. Relevant equations 3. The attempt at a solution When drawing a Free Body Diagram, i figured out at the center of mass in each rod and the surface between rod and the ground.. But i am confused with the surface between rods. Is there gonna be only horizontal force(pushing each other) or since they are inclined, there should be both horizontal and vertical forces? Really confusing... Could someone help me out here?