1. Strength of materials is a study of forces and force systemis acting on rigid
ID: 1867206 • Letter: 1
Question
1. Strength of materials is a study of forces and force systemis acting on rigid bodies at rest. I 1 a True Hooke's law refers to the relationship in which stress is proportional to strain b. False 2. Phue b.False 3. Allowab le stress represents a safe stress for purpose of design and analysis. b. False a. True Torque is the twisting action applied in a plane perpendicular to the longitudinal axis of the member. I 4. a True b.False 5,. Which statement about stresses in beams is NOT true I 1 a. Internal resistances are functions of the shape and area of the cross section of the beam. b. Internal resistances can be expressed as internal shear stress and bending stress The magnitudes of the shear force and bending moment can be determined by c. calculation or from shear and moment diagrams d. None of them. Same forces applied to the following rods, which one will have the greatest value of stress? I a. A rod with cross-sectional area of 2 in b. A rod with cross-sectional area of 0.01 f 6.Explanation / Answer
1. option (b) because strength of material is the study of mechanics of deformable solids.
2. option (a) Hooks law is defined as stress is proportional to strain upto proportional limit.
3. option (a), Allowable stress is the safe stress for design & analysis such that members are safe under given loading conditions.
4. option (a), torque acts in a plane perpendicular to longitudinal axis of the shaft.
5. option (d), as all statements are correct for stresses in beam subjected to different types of loading conditions.
6. option (b) because it has smaller cross-section area. and stress = load/area
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