Physics · Engineering Mechanics
A rigid body experiences a force F at point A. The same force F is then applied at point B along the identical line of action, where B is closer to the center of mass than A. For a perfectly rigid body, considering only external effects, which statement is MOST CORRECT?
- 1The external effect remains unchanged only if the body is in equilibrium.
- 2Both external effect and internal stresses remain unchanged.
- 3The external effect changes because the moment arm changes.
- 4The external effect remains unchanged, but internal stresses change.✓
Correct answer
The external effect remains unchanged, but internal stresses change.
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