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

Investigate how the period of a pendulum depends on its length.

Extracts from this document...


GCSE Practical Assessment – The Pendulum


To investigate how the period of a pendulum depends on its length.


Well pendulums have been around for a long time and have been the centre of timing devices. An example of this are the Grandfather Clocks, their important feature being that they are isochronous.


        One complete oscillation


 This basically means that the pendulum takes the same time for every swing. There are many factors that may affect the time for one complete swing of the pendulum; this is called the period of the pendulum. These factors could include the length of the pendulum and the weight of the pendulum. This information will help me decide how many results to take in my experiment.

...read more.



  1. Make sure whilst the pendulum is swinging that no one is near it.
  2. Clear the worktop before you start the experiment.
  3. Keep the stand well away from the edge of the table.


I predict that the longer the length of the pendulum the greater time the period.


Length of pendulum (cm2)

Time for 5 swings

Time for 10 swings

Average for 1 swing (5)

Average for 1 swing (10)


























...read more.



On the whole the experiment went well and I ended up with a set of accurate results. The experiment helped me find how the length of the pendulum affects its period which was my main aim. I believe my results are very reliable as they agree with my prediction and I repeated the results once again. I took enough results to support my conclusions and if I was to do the experiment I would probably take even more sets of results as it would make the results even more accurate. I could possibly extend the investigation by using different weights of the plaster cine to see if It affects the period of the pendulum also. Bu overall the investigation was accurate and very interesting.

...read more.

This student written piece of work is one of many that can be found in our GCSE Forces and Motion 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 GCSE Forces and Motion essays

  1. Marked by a teacher

    Investigating how the Length of a Pendulum affects its Period

    3 star(s)

    I believe that this has happened as when the pendulum gets longer the pendulum gets lower to the ground with the bob at the lowest point, so has less gravitational potential energy than a pendulum that is shorter and so higher up.

  2. Marked by a teacher

    Additional Science - What affects the period of a pendulum?

    3 star(s)

    18.98g 1.16 secs 1.03 secs 1.09 secs 1.00 secs 1.03 secs 1.10 secs 1.07 secs IRON 40.85g 1.09 secs 1.04 secs 1.12 secs 1.03 secs 1.10 secs 1.09 secs 1.07 secs Looking at the results for this preliminary, I do not think these results are reliable.

  1. Squash Ball and Temperature Investigation

    the testing should be fair as the air resistance will also be the same. * Amount of Air in Ball Different balls will be able to hold different capacities of air and so using one ball will ensure that its air capacity is the same throughout the experiment.

  2. To investigate the time taken for the pendulum to oscillate for a time period.

    45 13.00 1.35 1.300 3% 0.0014 1.69 52 13.93 1.45 1.393 4% 0.0016 1.94 The second step is to construct graphs using this data. The graph above shows how our results compared with the theoretical or predicted results. It shows that the results are very close to the predicted results and that they both have a very similar shape.

  1. Investigating the amazingness of theBouncing Ball!

    The experiment at each temperature will be repeated three times. The graph will be made up of the highest , lowest and average vales produced, to show the maximum margin of error and whether or not the Dr Daq equipment is accurate enough.

  2. In this Coursework, we were given the task of investigating some factors which affect ...

    Once the string is adjusted to the fixed length, the cork is tightened and the string is held firmly to maintain the required length of string. 2- The bob is then elevated to an angle of 10 degrees. This can be measured by means of the protractor which is attached to the cork.

  1. Strength of a string practical investigation

    Key factors The key factors affecting my experiment will be extension (a variable), also force will be a variable as I will add weights to change the forces acting on the strings, thus stress and strains will change in each string also.

  2. An Investigation to discover whether the string length of a pendulum affects the pendulum ...

    I have predicted this because of the formula. There is a square root sign on the right hand side of the equation, which makes me think that you must square the time. To make this investigation fair, I am going to only change one input variable at a time.

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