A cantilever of span 4 meter with left end fixed carries a concentrated load of 12kN at its free end. State the positions and magnitudes of the maximum shear force and maximum bending moment in the cantilever.
L = 4m
W = 12kN
Generally, in the case of cantilevers, the shear force and the bending moment will be maximum at the supports. In this case the shear force is constant throughout the length of the cantilever.
Maximum S.F = +W = +12kN
Maximum B.M = -WL = -12 x 4 = -48kN.m
Max S.F = +12kN (constant throughout the length)
Max B.M = -48kN.m