railway RRB JE (CBT I + CBT II) Mock Test 2024 Engineering Mechanics Impact and Virtual Work Virtual Work
The principle of virtual work is
1
for bodies in equilibrium, for a small arbitrary displacement, the total work done by the system is unity.
2
for bodies in equilibrium, for a small arbitrary displacement, the total work done by the system is zero.
3
for bodies in equilibrium, for a small arbitrary displacement, the total work done by the system is infinite.
4
None of the above