Lab Course 103A-Section 006 Physics Laboratory Report Lab number and Title: LAB A: Young’s Modulus---Elasticity in Length Name: Kris Edquilag Group members: Ernessa Francois Experiment Date : January 27, 2017 Instructor’s name: Sizhan Liu 1. OBJECTIVES To determine Young’s Modulus of elasticity of a thin wire by stretching. 2. THEORETICAL BACKGROUND If force F is applied to a wire length L which stretches an amount ∆L, and if ∆L is small so that the cross sectional area A remains constant, the tensile stress in this wire could be defined as: Stress = F/A And the tensile strain could be defined as: Strain = ∆L/L Within the elastic limit (Hooke’s law is valid), the ratio of tensile (or compressive) stress to strain is called Young Modulus of elasticity Y and is given by: Y = Stress/Strain = (F/A)(L/∆L) where Y depends on the material 3. PROCEDURE 1) Adjust the legs of the Young Modulus apparatus so that it is all leveled (used bubble level).
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- Spring '16
- elastic modulus