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

    The uncertainties of the measurements need to be taken into account to determine the accuracy of the calculated value of g. I calculated the uncertainty of g, acceleration due to gravity, at the surface of the earth, for each length.

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

    of a ramp, the summit being 20cm from the ground, and then is released. It rolls all the way down the ramp, of 2 metres, before it collides with the wall at the bottom. A couple of keen scientists thought it would be interesting to record the time taken for

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

    I will drop the pendulum from the same angle each time. This angle will be 10 degrees, anything more than that and the difference in amplitude of the oscillations will change more rapidly from the first to the last. This makes the time it takes for each different length of pendulum to complete the oscillations more variable.

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

    Theory: I have predicted that if the spring is in a vertical line, then the amplitude of the mass will affect the time of 1 oscillation, because I think the mass will speed up as the amplitude goes up. That's why the amplitude or the height will affect the time

  1. 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.

  2. Investigating pendulums.

    from its vertical position to let go each time. Some of the other variables I could have chosen to investigate are: * The angle of release * The mass of the bob * The number of oscillations timed * The shape of the bob One of the other variables I could change is the shape of the bob.

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