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

To investigate whether the change of length of the string is proportional to the time of a swing of a simple pendulum.

Extracts from this document...


Physics Investigation


The aim of my experiment is to investigate whether the change of length of the string is proportional to the time of a swing of a simple pendulum.

A simple pendulum can be defined s an object which is suspended by a light, inextensible thread from a fixed point, allowing the pendulum to oscillate. The time required for one complete oscillation is known as the period of a pendulum (T). Time of a swing of a pendulum is affected by the length of the thread and the angle that the pendulum is released at.


I predict that the increase in the length will lead to increase in the time it takes the ball to swing.

...read more.


Prepare the materials needed.Setup a pendulum as shown in the diagram.Raise the string to 90° and release it while timing.Stop the timer after 4 complete oscillations are achieved.Average and record the timing.Change the length of the rope according to guidelines below.Repeat the process 10 times.

My variable is the length of the thread. We will vary the length of the tread by 5cm. We will start with a thread 10cm long and will gradually build up: 10, 15, 20 cm and so on.


I will ensure that the practical work that I do is safe by wearing safety goggles, putting the apparatus behind a safety screen and by gently releasing the ball.

Fair Test

...read more.



There may be an odd result at 75 cm; this may be because the timing is not accurate.


I could further my investigation by doing more different lengths to achieve more accurate results.

...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

    The Simple Pendulum Experiment

    4 star(s)

    I have noticed that the mass of the pendulum has no effect on the time of the oscillation of the pendulum. The line is straight apart from a couple of stray results. The graph of the length of string increases so does the time of oscillation I have researched this subject and have found the formula for the simple pendulum.

  2. Period of Oscillation of a Simple Pendulum

    The graph must not be misinterpreted, as the graph goes up, this indicates that the pendulum is slowing down. The pendulum is not speeding up. I must now theorise as to why the pendulum slows down instead of staying at the same speed throughout.

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

    Method: A clamp stand will be erected and using a clamp and boss the pendulum will be held up in between two pieces of wood. The length of string will be measured using a ruler. The pendulum (20g) will be positioned to ten degrees from its stationary point using a protractor and will be released.

  2. Squash Ball and Temperature Investigation

    This thorough approach will help give a good range of results and with the variables being kept all constant apart from temperature; the results produced will be fair, accurate and reliable. Height of Bounce (cm) Temperature (0C) Experiment 1 Experiment 2 Experiment 3 Experiment 4 Experiment 5 Average Height (cm)

  1. Physics Coursework: To investigate the Oscillations of a mass on a spring

    experiment that I did which proved that the amplitude did not affect the time of oscillations. But if the amplitude is very big, because of the heavy mass, the spring may be stretched so much that they no longer would obey Hooke's Law.

  2. Investigating factors which affect the period time of a simple pendulum.

    - Human reaction time. Depending on human reaction time, the measurement period time could have been measured inaccurately, due to slow reactions when setting the stop-clock etc.

  1. Investigating the amazingness of theBouncing Ball!

    When the ball hits the surface this exerts a force on these polymer chains stretching them out. The Intermolecular forces between the polymer chains then act against this force to 're-entwine' the polymer chains. So I believe that the hotter the ball the more energy supplied to the polymer chains,

  2. Pendulum- investigate how the length of a simple pendulum affects the time for a ...

    There are two forces acting on the pendulum bob. Gravity tries to pull the bob downwards but this is resisted by the tension in the string. As there are only two forces they can only be balanced when they are in opposite directions.

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