engineering recuitment BEL Probationary Engineers Mock Test 2025 Engineering Mechanics Impact and Virtual Work Virtual Work
In the context of the virtual work principle in continuum mechanics, which of the following statements is true about a system in equilibrium?
1
Neither conservative nor non-conservative forces do virtual work.
2
Only non-conservative forces do virtual work.
3
Both conservative and non-conservative forces can do virtual work.
4
Only conservative forces do virtual work.