• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

D2 Measurong Young's modulus of copper(TAS)

Extracts from this document...


D2 Measurong Young's modulus of copper(TAS)


In this experiment, The Young's modulus of copper will be mesured .


- copper wire   4m

- G-clamp
- polley on clamp

-2*Wooden block

- 2*rule (half meter and meter rule)

- slotted mass with hanger 15 * 0.1 kg

- adhesive label
-micrometer screw gauge
-safety goggles  
-polystyrene board

Warning : Wear safety goggles when doing this experiment )


When a spring is stretched or compressed by a force.The extension is directly proportional to the applied force.This relationship known as Hooke's law.
Force=ke.However,the law is used when the proportional limit is not exceeded.To further investigate how the material behaves when it is stressed,we define:

The stress applied to the wire is defined as the force applied per unit cross-sectional area.
Stress = force per unit area =F/A    

(where F is the force or tension in the wire, A is the cross-sectional area)

When the wire being stretched,it is under strain.The strain is defined as the extension per unit length.

...read more.


nd measurement

3rd measurement

Diameter d/m




Mean diameter of wire d = 0.000278 m

Original length of wire l = 3.95 m

Load m/kg








Extension e/m
























Before the load increase to 0.7 kg.The extension is nearly proportional to the force .Also stress is nearly proprtional to strain.After the load is beyond 0.7kg,extension is not proportional to force and stree is not proportional to strain.The plastic deformation occur.The wire does not return completely to its original length .The wire broke whn the load is increase to 1.4 kg.

This part of graph obeys Hooke’s law.

Fig. 4

% strain = extension / original length x 100%

= 0.0042/ 3.95x 100%

       = 0.106%


...read more.


safety goggles when doing this experiment.It can protect our eye is hited by the wire.

Young's modulus is more useful than force constant because the Young's modulus depend on the force per unit cross sectional area.Also,the extension is per unit length.It is more accuracy than the force constant which is only depend on the relationship between the force and extension.

From the book called NEW WAY PHYSICS.the young's modulus of the copper is
124x109 Pa.

Also from
the Young's modulus is between110 to 130 x109 Pa.
Compare with our result.It is 124x10
9 Pa.The answer is very close to the reference answer.It is because we take all of the value very carefullyand seriously for decrease the error.


The Young's modulus is depend on the materials.The Young modulus of copper which measure by our group is
124x109 Pa

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Mechanics & Radioactivity section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Mechanics & Radioactivity essays

  1. Copper Young's modulus

    - A metre rule was fixed alongside the wire with the maker for measuring the extension. Performance of the experiment 1. The hanger was tied to the end of the wire so as to straighten out the kinks in the wire and the unstretched length (lo)

  2. Young Modulus of Copper

    against ? ) . For a non brittle material, usually there are two stages of deformation before breaking. Stage 1 : Elastic deformation In this stage, the wire would return to its natural length when the stress is removed. Hooke's law is usually obeyed in this stage, therefore the graph is almost a straight line.

  1. Young's Modulus of Nylon

    At each stage of the experiment I will take readings of length using a standard 1m ruler, and will measure the area of a cross section by gathering the diameter value using a micrometer, halving this value to gather radius and then use the formula Before any weights are added,

  2. Drayton Manor Theme Park: Centrepedial Force

    weight is 630kg, this multiplied by 9.8Nkg-1 to get the value in Newton's. 630 � 9.8 = 6174N. I can then calculate the resultant upwards force using the equation Force = mass � acceleration (F=ma) 11. I have the mass but do not have the acceleration.

  1. The physics involved with a rollercoaster.

    V - 0ms-1 , mass = 2990 kj First I needed to calculate the starting velocity: Velocity = displacement/time = 32.81/1.524= 21.52ms-1 From this I could calculate the kinetic and Gravitational potential energy and ignoring friction and air resistance, I assumed these should equal each other: - Kinetic energy =

  2. Use of technology in a hospital radiology department. The department of imaging is one ...

    During the examination there might be a slight noise as the machine start working running, but there will be unaware of the fraction of a second when the X-ray source is active. The process of taking the photo will last only a few minutes, but the radiographer may need to take further X-ray a different exposures or different positions.

  1. Calculating the Young Modulus of Constanton

    Method To measure the Young's modulus of constanton I will: 1) Set up the equipment as shown. 2) Choose a suitable section of wire from the real that doesn't appear bent, twisted or deformed. Measure the diameter of the wire with a micrometer before attaching it to the weights. 3)

  2. The Physics of an Atomic Bomb

    To explode, the bomb must first be imploded: compress a subcritical spherical fissionable mass (a ball of normal density uranium and other metals) with specially designed explosives. Implosion is the detonation of explosives on the outer surface, instead of the inner surface, which causes the detonation/shock wave to move inward.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work