• 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 will repeat the experiment three times for each length; this will give me enough results to create a reliable graph. Whilst carrying out this experiment you have to realise some safety issues that are to do with the equipment we are using.

  2. Marked by a teacher

    Additional Science - What affects the period of a pendulum?

    3 star(s)

    The results could have been affected by reaction time as well, from the person timing the experiment. Preliminary Test #2: In this preliminary, I am investigating how changing the material and the weight of the ball bearing can affect the period.

  1. Squash Ball and Temperature Investigation

    Using tongs to hold the ball under water, heat the ball in the beaker full of water at 850C (add ice if necessary to cool down then temperature of the water) for 60 seconds. 4. While the ball is being heated, set up your 1 metre rule on a

  2. Approximate Stopping Distances

    Small objects can have a large momentum but they must be travelling very fast. For example a mouse and a cat are travelling at the same speed the one with the larger mass has the greater momentum. The momentum of an object is measured in kilogram meters per second (kg m/s).

  1. What affects the time period of a pendulum.

    Preliminary Work To confirm that the theory's are correct we performed some preliminary experiments using different variables. With a small bob at 29 cm's it come to 1.189 seconds for one swing. With a heavier bob it came to 1.207 seconds, so the weight doesn't affect it, as proved in the theory.

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

    OBSERVATION RESULTS: The following table includes my results for the experiment, where length was the independent variable: Length of String (M) Period of 10 complete Oscillations (s) Average of 10 T T 2 T T1 T2 T3 0.1 6.5 6.5 6.5 6.5 0.65 0.42 0.2 8.9 9 9.1 9 0.9

  1. Investigating the amazingness of theBouncing Ball!

    The air inside the rubber ball maintains its turgidity of the ball. As the temperature of the ball is increases the energy of the molecules in the ball have an increasing amount of energy and so excert a greater force from the inside of the ball increasing the pressure within the ball.

  2. Investigating pendulums.

    that length and then reduce the length of the string by ten centimetres. The lengths of the string I am using are 100cm, 90 cm, 80cm, 70cm, 60cm, 50cm, 40cm, 30cm, 20cm, and 10cm, this is the key variable I am testing.

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