Consider a cantilever truss structured as a right-angled triangle ABC, where AB is the horizontal top member of length L, BC is the vertical wall-supported member of length L, and AC is the diagonal member. If a downward vertical load W is applied at the free joint A, the magnitude of force in the horizontal member AB is given by:

What is the value of maximum shear force for a simply supported beam of length 6.0 m, subjected to a uniformly distributed load (w kN/m) throughout the span, for which the bending moment equation at a section from the left support situated at 'x' m is Mx = 30x - 0.5(wx2)?

Method of joints is applicable to calculate member forces of a truss, when the number of unknown forces at the joint under consideration is not more than: