Statics is concerned with the study of objects at rest.

Question

BlackTom AI · Accepted Answer

Statics deals with bodies in equilibrium: the net force and net moment on the body are zero (ΣF = 0 and ΣM = 0). This is the primary defining concept.

1. Relevant knowledge points and concepts
- Newton’s First Law: if the net force on a body is zero, the body remains at rest or moves with constant velocity.  
- Definition of statics in engineering/mechanics: the branch concerned with analysis of forces on bodies in equilibrium (commonly objects at rest).  
- Equilibrium conditions: ΣFx = 0, ΣFy = 0, ΣM = 0 for rigid bodies in plane statics.

2. Step-by-step reasoning
- By Newton’s First Law, zero net force implies no acceleration. Statics applies when acceleration is zero.  
- When analyzing a stationary beam, truss, or supported body, we set ΣF = 0 and ΣM = 0 to solve for unknown reactions and internal forces. These equilibrium equations are the core procedures of statics.  
- Example (symbolic): For a beam with vertical loads and supports, ΣFy = RA + RB − Σloads = 0; ΣM_aboutA = RB·L − Σ(moment of loads) = 0. Solving these yields support reactions while the body remains at rest.

3. Calculational steps (symbolic)
- Write ΣFx = 0, ΣFy = 0, ΣM = 0.  
- Substitute known loads and solve linear equations for unknown reactions.  
- Verify all equilibrium equations hold (consistency check).

4. Why the correct answer is correct
- Because statics specifically addresses conditions of equilibrium (most typically objects at rest), using the equilibrium equations derived from Newton’s laws to determine forces and moments.

5. Why the other option (False) is incorrect
- Declaring the statement False would imply statics is not about objects at rest, which contradicts standard definitions; dynamics (not statics) handles accelerating bodies.

6. Conclusion
The statement is True: statics is concerned with the study of objects at rest (more generally, bodies in equilibrium). This matches the provided answer.

Statics is concerned with the study of objects at rest.True/False

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