

MCQOPTIONS
Saved Bookmarks
1. |
According to the principle of virtual work, If the system of rigid bodies is in equilibrium under the action of a set of forces, then the work done by those forces during a small virtual displacement of the system must be equal to |
A. | Infinite |
B. | Zero |
C. | Unity |
D. | A non-zero constant |
E. | always changing |
Answer» C. Unity | |