When equal and opposite axial forces act to stretch a body, what type of internal stress is generated______________________?
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Answer: B. tensile stress
Explanation
Equal and opposite axial forces directed outward pull the material apart along its longitudinal axis. This action generates internal resistance known specifically as tensile stress across any perpendicular cross-section. Tensile stress uniformly opposes the external pulling forces to maintain static equilibrium within the body. Stress is defined as internal distributed force per unit area acting across a continuous material plane. Axial loading occurs when external forces pass directly through the centroid of the cross-section. Tensile forces tend to elongate the material in the direction parallel to the applied force vector.
Structural cables and tie rods are classic engineering examples of components subjected primarily to tensile stress. Material scientists measure tensile strength to ensure metal wires and bars do not fracture under load. Designing safe mechanical linkages requires careful calculation of internal tensile stresses. Option A is a general descriptor rather than the specific mechanical term for stress caused by stretching. Option C refers to stresses acting perpendicular to the longitudinal axis, typically caused by bending loads. Option D describes stresses generated by pushing forces rather than the pulling forces specified here.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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