Physics · Engineering Mechanics
Consider a system subjected to an external force F and an inertia (pseudo) force Fi. The essence of D'Alembert's principle is best captured by which of the following statements?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The inertia force acts to oppose the action of the external force.
- 2The difference of the internal force and the inertia force on a system is always zero.
- 3The system is in dynamic equilibrium when F + F i = 0✓
- 4The system is in equilibrium when F = F i
Correct answer
The system is in dynamic equilibrium when F + F i = 0
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