स्पेस आरेख (space diagram) में दो निर्दिष्ट बिंदुओं से होकर गुजरने वाले फ्यूनिकुलर बहुभुजों (funicular polygons) की संख्या कितनी हो सकती है?

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: