Question:
Which of the following forces are considered in the equations of virtual work?
Which of the following forces are considered in the equations of virtual work?
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In the principle of virtual work, only external forces are considered. Internal forces and reactions are excluded unless explicitly stated.
Updated On: May 6, 2025
- External forces
- Internal forces
- Reaction forces
- Tensions in strings
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The Correct Option is A
Solution and Explanation
Step 1: Understand the principle of virtual work.
The principle of virtual work states that the work done by external forces during a virtual displacement is zero in equilibrium. Step 2: Internal forces do not contribute.
Internal forces do not appear in the virtual work equation because they cancel out in rigid body motion or equilibrium.
The principle of virtual work states that the work done by external forces during a virtual displacement is zero in equilibrium. Step 2: Internal forces do not contribute.
Internal forces do not appear in the virtual work equation because they cancel out in rigid body motion or equilibrium.
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