Engineering Statics

E-18


A slender rod of length L is lodged between a peg, C, and the vertical wall and supports a load, P, at end A. Knowing that L=12.5a and q=30 degrees and that the coefficients of friction for static and kinetic cases are 0.20 and 0.15 respectively at C and zero at B, determine whether the rod is in equilibrium.

The FBD of the slender rod is drawn.
The equation of the frictional force at C in terms of the normal force 
at C is given.
The moment equation is written about point B.
The moment equation is solved for 2C.
The moment equation is solved for C.