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

Prove if Hookes Law's theory of extension is proportional to length is true.

Extracts from this document...


Suganthan Shanmugaratnam

Physics Coursework



The aim of this coursework is to prove if Hookes Law’s theory of extension is proportional to length is true.

Scientific Knowledge:

Robert Hooke investigated springs nearly 30 years ago. He found that the extension was proportional to the stretching force so long as the spring was not permanently stretched. This means that doubling the force doubles the extension, trebling the force trebles the extension and so on. Using the sign for proportionality we can say write Hookes Law as: EXTENSION IS PROPORTIONAL TO STRETCHING FORCE.


I predict that the extension will be proportional to the stretching force so long as the string is not permanently stretched. This means that the results should be near enough consistent while increasing in the extension until I reach the end of the experiment.

Safety Precautions:

I am going to make my experiment safe by wearing safety goggles, just incase the spring breaks and bounces back to my eye.

...read more.










Results table:

MASS (g)






...read more.


All of my results seemed to be very accurate. They all followed a pattern, but if I was to do it again, I would like to get to elastic point of the spring.

The only problem is that some of the measurements could have been slightly inaccurate because I was using a 30cm ruler, and maybe that spring had not fully stopped. If there were a chance to do the experiment again, I would wait longer so there’s more chance for the spring to stop.

Also to make sure that all my results were accurate I would have to dedicate more time to the experiment and be able to repeat them again.

There are many different interpretations I could of used in this experiment such as changing the length of the spring, the material of the spring or the thickness of the spring. This could all have a major effect on the final outcome of the results.                              

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Waves & Cosmology 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 Waves & Cosmology essays

  1. Experiment B11: Measuring focal length of lenses

    After estimating the uncertainty, the mean focal length of the concave length is found finally. There are a lot of errors as there is so much calculation.

  2. An Investigation into Hooke's Law - The aim of this experiment is to find ...

    I think this will happen because the greater the mass (measured in Kilograms, or Kg for short) an object has the greater the weight (measured in Newton's, or N for short) it will have. The force of gravity pulls the object toward the ground with greater force and speed the greater the mass it has.

  1. I am investigating the relationship between extension and load, therefore testing Hooke's Law.

    2.5 250 13.0 13.0 13.0 13.0 3.0 300 15.0 15.0 15.0 15.0 3.5 350 18.5 17.0 16.0 17.2 4.0 400 21.1 21.1 22.0 21.4 A baseline measurement was obtained of the spring when there was no force applied to it then weight was increased systematically at 0.5N or 50g.

  2. In this experiment, I am going to find out the relationship between Force and ...

    From the equation F=kx which correspond to the equation of a straight-line y=mx, I will find the stiffness of the stretchy sweet, which is the reciprocal of the gradient of the region of the graph which obeys Hookes Law. Modification * I performed suspended my load on the stretchy sweet,

  1. Investigation into Hookes Law - investigate the effect of mass on the extension of ...

    The most important factor I MUST use to keep this a fair test is to take accurate measurements after I measured the extension. Safety: The Safety precautions I must take for this experiment are, safety goggles to protect the eyes just encase the spring snaps and then the metal off the spring will be flying about.

  2. An Experiment To Examine the Effect of Springs In Parallel

    and the load at mid point between the springs (in parallel). This way each spring has the same chance of extension. (I predict here that by doing this the weight will be shared equally between all the springs). * Dowel I will use the same dowel throughout the experiment.

  1. An experiment to investigate and determine how rubber behaves when tension forces are applied ...

    I was led to believe that from my introduction that the rubber band was no longer following Hooke's Law. This means that if I am to say this that means that the results at the beginning of the experiment did not apply Hooke's Law and that only up until a

  2. Waves and Cosmology - AQA GCE Physics Revision Notes

    The Earth is at a temperature of about 300 K emits mostly infrared radiation and the Sun mostly emits visible light. At the left side of the scale, the wavelength is relatively shorter, therefore the star would appear blue (the peak would also be higher as the intensity also increase.)

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