The bracket abc can be supported in the eight different ways shown.
all connections consist of smooth pins, rollers, or short
links.
in each case, determine whether:
a) the bracket is over (redundant), completely, partially, or
improperly constrained
b) the reactions are statically determinate (sd) or statically
indeterminate (si)
c) the equilibrium of the bracket is maintained in the position
shown
also, wherever possible, compute the reactions, assuming that the
magnitude of the force p is 100 lb.