You are asked to find the Young modulus for a metal using a sample of wire. *(a) Describe the apparatus you would use, the measurements you would take and explain how you would use them to determine the Young modulus for the metal.

Apparatus: The wire is secured by a clamp and clamp stand A hanging mass is attached to the end of it, where the mass hung can be changed A Vernier scale or ruler may be attached to the apparatus to measure the distance the wire has extended Measurements: The initial length of the wire can be measured using a ruler (or metre rule) The wire diameter can be measured with a micrometer The mass attached can be measured using weighing scales (or by using known masses) The extension can be measured using a Vernier scale (or ruler) for a range of different masses Calculating Young’s Modulus: E= stress/strain                     So E is the gradient of a stress-strain graphStress=F/A=mg/πr2 Strain= extension/initial length            Readings for extension can therefore be taken for different masses.   The stress and strain can be calculated and plotted on a graph, and E can be measured from its gradient.

Answered by Robert H. Physics tutor

7129 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Why do gravitational fields around point masses obey an inverse square law?


How does stimulated emission work?


A student is measuring the acceleration due to gravity, g. They drop a piece of card from rest, from a vertical height of 0.75m above a light gate. The light gate measures the card's speed as it passes to be 3.84 m/s. Calculate an estimate for g.


If a bulb has a current of 20mA and voltage of 5V, and the current cost of electricity is £3 for a kW/hour. How much money would you spend to power the bulb for 8 hours? Are these good estimates for the current, voltage and cost of electricity?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences