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

Pendulums Experiment

Extracts from this document...


Pendulums Experiment Aim To investigate the motion of pendulums, and using their rate of fall, calculate the value of acceleration due to gravity (G) Hypothesis The force of gravity acts on all objects around earth. It is a constant force that pulls objects toward it at a constantly accelerating speed (not considering resistance). This acceleration is known as G or gravitational pull. When an object is lifted away from the earth, it gains gravitational potential energy (GPE); this is only released when the object is allowed to travel back to the earth when it is released as kinetic energy as it falls. This is rather like a toy push-car being pulled backwards then let go. ...read more.


The string was measured from the point where it would pivot when swung to the centre of mass of the pendulum. The pendulum was then dropped from an angle as a stopwatch was started. The pendulum swings were counted, and after ten oscillations (complete movement of the pendulum to back where it started) the stopwatch was stopped and the time noted. This was then repeated twice, the angle did not have to be kept constant but a smaller angle gave more accurate results. The experiment was then repeated for nine different heights at approximately regular intervals. Fair Test The non-key factors mentioned in the hypothesis must remain constant during the experiment in order to provide a fair test. ...read more.


The following columns were added to manipulate the data into a form I could use. Time for 1 oscillation (s) Time Squared 0.62 0.39 0.88 0.77 1.12 1.25 1.27 1.62 1.40 1.97 1.53 2.34 1.67 2.80 1.74 3.04 1.81 3.26 2.07 4.27 The following scatter graph is a graph of distance between pivot and centre of mass against time taken for one oscillation. The line of best fit has a very slight curve. The graph below however is a graph of distance against time squared, this is a straight line. Evaluation This experiment can be considered very successful. The results taken were very accurate and plotted a straight line as per my hypothesis. Andrew MacKay 11S ...read more.

The above preview is unformatted text

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. In this experiment I aim to find out how the force and mass affect ...

    The light gate was securely fastened to the clamp stand and the picket fence was attached to the top of the trolley so it wouldn�t fly off and hit somebody while it speeded down the runway. The runway also had rubber grips at the bottom end of the runway, this

  2. The determination of the acceleration due to gravity at the surface of the earth, ...

    by 60 and then adding the seconds recorded. Then take an average for each length, by adding the three times (converted into seconds) and dividing by 3. Take into consideration any anomalies. 17. Calculate the period, by dividing the average time for each length by the number of oscillations, 30. 18. The period then needs to be squared.

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

    As soon as the load comes up and is about to go down again, I will then start my stopwatch. I will try to use springs, which all of them have the same length to start off with. And when every experiment has finished, I will put on another spring in series.

  2. Investigating pendulums.

    As things like air resistance can effect the time of a period. I think it would be interesting to see if a flat shape would make any difference to the time of the period. I could also change the force of gravity, as there is a smaller force of gravity

  1. An Experiment Using a Pendulum to Find the Acceleration due to Gravity.

    They are the drop angle the mass of the bob and the length of the pendulum. The two former are not included in the formula so should not affect the outcome of the experiment, non-the less I will keep them as constant as possible throughout my investigation.

  2. Find which factors/variables affect a pendulums period (time taken to do one oscillation) and ...

    changing the two variables that need to be changed to determine the experiment, so I will only change the length of the pendulum and the mass of the bob, all other variables will be kept the same. This includes angle at which the pendulum is released and air friction.

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