This is a walk-through of problem 4-44 from Hibbeler's Mechanics of Materials books from Solids class. It entails writing a compatibility equation for a beam that displaces down under load:
0:11 FBD
00:48 Equilibrium
01:46 Statically indeterminate case!
02:00 Displacements
02:40 Similar Triangles
03:22 Compatibility equation
04:25 System of equations
05:03 Supporting reactions in terms of P
05:23 Normal stresses!
