• 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...

Introduction

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.

Middle

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.

Conclusion

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

    If time permitted I would have also done the experiment in a slightly different way.

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

    Once all the results have been obtained, they need processing. Convert the readings, which have been recorded in minutes and seconds, into seconds by multiplying the minutes (number before the decimal place) by 60 and then adding the seconds recorded.

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

    This will mean that the extension will be proportional to the load. Also, I will record the time to the nearest 2 decimal places. 1st experiment apparatus List: 1. 3 Springs 2. Stand and Clamp 3. 4N of Mass (Load)

  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.

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

    I must use an insulator for a ramp because if I used a conductor the electricity would run from one electrode, through the ramp to the other electrode and start the stop-clock. For this reason, I am using a plastic ramp.

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

    Rigid pendulums are used in clocks so they must be accurate as timekeepers. Yet an Internet site (http: kossi.physics.home.edu/Courses/p23a/Experiaments/Pendulum.html) about the experiment stated that it recommended the use of a massless, inextensible string. All experiments I have seen also use some sort of string rather than a rigid structure.

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