WVC PHYS222 Winter 2019 Lab 2.docx - Elasticity Young’s Modulus Max Stevens Luke Corbin ABSTRACT The purpose of this lab is to explore elasticity by

WVC PHYS222 Winter 2019 Lab 2.docx - Elasticity Young’s...

This preview shows page 1 - 3 out of 9 pages.

Elasticity: Young’s Modulus Max Stevens Luke Corbin 1/16/2019 ABSTRACT: The purpose of this lab is to explore elasticity by experimentally determining the Young’s modulus of a wire. INTRODUCTION: Part of elasticity is determining how much the object will deform under an amount of force before returning back to its original shape when the force is removed. For example, determining how far a rubber band stretches under a certain amount of applied force. This is determined by a value that represents the ratio of stress to strain, called a modulus. The modulus is constant for a material. There are three types of moduli, Young’s modulus, shear modulus, and bulk modulus. This lab considers Young’s modulus, which deals with tensile stress or the amount an object “stretches” when it is under tension. Young’s modulus is usually used with cables, wires, ropes, or other long, slender objects that hold tension. Stress would be the force of the tension per the cross sectional area of the wire, strain would be the percent change in the length of the wire, or the quotient of the change in length and the total length of the wire. All of these variables are measured in this lab and the Young’s modulus of a wire is determined.
Image of page 1

Subscribe to view the full document.

THEORY: The main formula used is Young’s modulus. Both tensile stress and tensile strain are used separately to fill parts of our data table. After which these are used in combination to find Young’s modulus for our wire. Y tensile stress tensile strain = F / A Δ L / L i In order to find how far the wire has stretched the the rotation of cylinder with radius R that the wire is wrapped around must be considered. This is directly proportional and is calculated using the following formula. Δ L = Using the reflection in a mirror mounted on the cylinder, θ as shown above is found using this formula. Δ y is the change from initial height viewed through the telescope to height after weight is added and D is the distance from the telescope to the mirror tan
Image of page 2
Image of page 3
  • Fall '18
  • Bruce Unger
  • Force, elastic modulus

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes