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

science pendulum experiment

Extracts from this document...

Introduction

Jason Prasad

Science Coursework-

Plan

Aim

My aim of this investigation is to see how the length of the string affects the time it takes for a pendulum to oscillate.

There are many factors that could affect the pendulum swing.

  • Length of string
  • Angle Release
  • Gravity
  • Air resistance
  • Colour of bob
  • Mass of bob
  • Temperature
  • Thickness of string

After going through possible factors, I have narrowed my search for a factor down to four possible ones.

 The length of the string is a factor. Changing this will affect the distance traveled because the longer the piece of string the more distance it has to cover. This should make the pendulum take longer to complete one full osolation. This is important because the further the pendulum swings, the longer it will take.

The angle of the swing angle is another factor that may affect the pendulum. The higher the angle, the longer it will take for the pendulum to swing because it has further to travel.

Air resistance may also affect the time taken for the pendulum to osolate. Unfortunately I cannot control this factor, but in the science lab I don’t think that this will be a

...read more.

Middle

Prediction

I predict that the longer the string, the more time it will take for the pendulum to swing.  I predict this because when the string is shorter the distance it needs to travel is also shorter, therefore reducing the time.

I will also need to draw a graph in the latter stages of this investigation. I think that the graph will look like this:

Method

        First to complete the investigation I will need to get all my apparatus. When I have collected this I will need to set it up in the correct way so that my investigation will be a fair and accurate one.  I will get a clamp stand and clamp 2 blocks of wood together. In between the two blocks of wood a piece of string, attached to it a weight (the bob), will be present. This string will be moved up and down so that I can use different lengths. Some tape will be wrapped around a protractor, which will be attached to the two wooden blocks. When the experiment is set up in the correct manner, the investigation can be performed. image01.png

         I will time ten swings for each length of string, and will right the results down in the results table.

...read more.

Conclusion

The measurement of the string could also be improved. More precision in measuring lengths could be used for more accuracy in the results. Again, I do not believe this will affect the outcome of the final conclusion.

The equipment that was used could also be improved. More updated, better conditioned equipment would help to the accuracy of the results.

If the experiment could be extended, I would try a few other things. I would test the other variables; for example the release angle and mass of the bob, and see how they affect the oscillation of the pendulum. I would also try out further lengths of string. This would improve my experiment by making it more reliable and more accurate. Sticking with the string, I would test different materials to see if the material of the string affected the pendulum oscillation. One other thing that I may do is see if there is another way to swing the pendulum, for example instead of swinging the pendulum backwards and forwards I would try and swing it in a horizontal circular path (conical pendulum), and compare those results with these ones.

...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

    Physics Pendulum Experiment

    3 star(s)

    To make this possible we had the length of the string and its maximum extent in length so that we had a set length that was easy to remember, and if we had to redo our test or repeat our actions then we could easily pick up a stable and unchanging measurement.

  2. Marked by a teacher

    Additional Science - What affects the period of a pendulum?

    3 star(s)

    Keeping these variables the same is to make the results as accurate as possible. METHOD: 1- Measure out the string carefully with the 30cm ruler, then measure one at 20cm and another at 10cm. 2- Make sure to leave some extra bit of string to make a loop to attach the ball bearing.

  1. Period of Oscillation of a Simple Pendulum

    Therefore, I have no evidence to back up my conclusion, even though I believe it is the right conclusion. In my experiments, if I timed an experiment wrong, and I was sure that I had significantly mis-calculated it, then I repeated that part of the experiment until I was sure

  2. Squash Ball and Temperature Investigation

    bounced, its surface is no longer solid and does not hit the surface but almost sticks to it resulting in a much lower bounce. Also, my sketch of the graph showing the line not going through the origin is also correct.

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

    I also decided that it would be necessary to become accustomed to the rhythm of the oscillations before starting to count them. This would be done by counting down to 0, counting 3, 2,1, 0... as the pendulum completed these oscillations and as the bob hit the left extreme on the 0 count, start the stop watch.

  2. Strength of a string practical investigation

    different equipment and the set up would not be exactly the same as it would not be the original equipment set up in their original positions. To overcome this problem in my real experiment then I will use 500g masses instead of 200g masses.

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

    Period (secs)_ 50 2.1 40 1.64 30 1.28 20 0.83 10 0.37 As all my results were accurate, I had no need to repeat any of them. However, had there been an anomalous result, or had I come across any problems, I would have repeated my results to identify the cause and eliminate anomalies.

  2. An Investigation to discover whether the string length of a pendulum affects the pendulum ...

    This was not the only key factor that I could have changed. I could have investigated whether the weight of the pendulum, the angle you drop the pendulum from, or the material that the string is made from will make any difference.

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