Negative mobility values in engineering mechanics indicate a miscalculation in the degrees of freedom for the links in a structure, which is not possible according to the definition of mobility. Mobility is determined by the independent parameters needed to define the positions of all links. If negative values are encountered, it suggests that the constraints or link configurations are incorrectly defined. The discussion also touches on the difficulty some students face with statics compared to mechanics, despite their interconnected nature. Additionally, a question arises about the treatment of distributed loads in mechanics, indicating ongoing learning challenges.
