PHYS 1003 Lecture Notes - Lecture 16: Ultimate Tensile Strength, Stress (Mechanics), Simple Harmonic Motion

• School: Carleton University
• Department: Physics
• Course: PHYS 1003
• Professor: Andrew Robinson

Document Summary

External force per unit area to the solid object. Magnitude of the force perpendicular to the area a. Fractional change in length along the direction of the longitudinal stress. Tensile force stretches the object (change in length is positive) Compression force squeezes the object (change in length is negative) Shear force force applied to a side of the object. Rod will elongate in the direction of the force but the sides get thinner. Poisson"s ratio (always under 0. 5 as volume would increase after that) If the stressed object has a radial symmetry. If a constant force is applied all around the object. The response to a volume stress in a change in the total volume. Tangential force is applied across a face of an object. The response to a sheer stress is a sheer strain (ex. cutting with scissors) Strain is a result of stress applied and is also proportional to stress. The stress force required to beak the material.