एक बुनियादी संरचनात्मक ट्रस (कैंची) में उपयोग किया जाने वाला सबसे मौलिक और स्थिर ज्यामितीय रूप कौन सा है?

In standard assumptions made for plane truss structures, the connections between members are assumed to be joined by:

The coefficient of friction is theoretical value of _____ for ideal, perfectly smooth surfaces.

In the analysis of structures by the principle of Virtual Work, which of the following forces are assumed to do work and are not omitted?