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

Determination of g by freefall

Extracts from this document...


Name: Sarah Barendswaard Abubakr                                                Date: 9/02/09

Teacher:  Mr. Briffa                                                                   Subject: Physics

Year: Y12                                                                             Task: Lab report

Determination of gravity by free fall


In class we were given an instruction sheet where the aim, apparatus and method where given, from that we had to obtain results and process them.


To determine the value of acceleration due to gravity



Is the variable which we are changing to analyse how it changes the dependant variable; the distance of free fall


The variable that we obtain from the results and is changed by the independent; the time taken for the ball to reach the ground


...read more.


The steel ball was stuck on the magnetic part of the release and capture mechanism for the ball as the power was switched onThe power button of the millisecond timer was switched on and as it stopped flashing its light, the release and capture machine was turned off and the amount of time for the ball to reach the capture box was recorded by the millisecond timer.

This was repeated 3 times for each reading.

(x) = 12cm, 24cm, 36cm, 48cm, 60cm, 72cm.

...read more.


There may have been a systematic error resulting from the machines used to measure the time, we cannot see this from the graph, however this systematic error could affect the position of the line by a very small amount. Even though this value is small it does affect the graphs gradient.

Improvements that we can deal with in the school lab

Obviously in the school we can not perform an experiment that is at sea level, so the position of the experiment can not really be improved however there are other improvements:

  • The experiment could have been done in a vacuum to prevent air resistance ( drag ) from effecting the balls motion.
  • The experiment could have been repeated with various other machines to prevent systematic error from occurring.

...read more.

This student written piece of work is one of many that can be found in our International Baccalaureate Physics 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 International Baccalaureate Physics essays

  1. Investigate the Strength of Straw.

    = � 0.1 cm 3 = � ( 0.05 + 0.005 ) = � 0.1 cm 4 = � ( 0.05 + 0.005 ) = � 0.1 cm 5 = � ( 0.05 + 0.005 ) = � 0.1 cm Thus based to all table above, the length of stretched straw: No.

  2. Experiment on looking at enthalpy of solutions

    78,00 17,10 17,40 17,25 79,00 17,10 17,40 17,25 80,00 17,10 17,50 17,30 81,00 17,10 17,40 17,25 82,00 17,10 17,50 17,30 83,00 17,20 17,50 17,35 84,00 17,20 17,40 17,30 85,00 17,20 17,50 17,35 86,00 17,20 17,40 17,30 87,00 17,20 17,40 17,30 88,00 17,20 17,40 17,30 89,00 17,20 17,40 17,30 90,00 17,20

  1. Verification of the earth's gravitational field strength

    Measure a certain length of the string and tie the string on the metal bar. 4. Next to the string that you tied, tie another string at a small angle and hold the end of it with the retort stand so that it doesn't move.

  2. Measuring "g" by freefall

    3rd try, s (sec) Average, s, (sec) Uncertainty (sec) 1 �0.001 0.56 0.45 0.56 0.52 �0.20 2 �0.001 0.59 0.55 0.61 0.58 �0.20 3 �0.001 0.68 0.63 0.77 0.69 �0.20 4 �0.001 0.76 0.82 0.69 0.76 �0.20 5 �0.001 0.77 0.91 0.80 0.83 �0.20 6 �0.001 1.00 0.92 1.19 1.04 �0.20 7 �0.001 1.10 1.14 1.21 1.15 �0.20 8

  1. Bouncing balls

    decimal place To make the experiment more accurate and have more datas to compare, I designed the second phase of the experiment. The method used was the same, but the surface-on which the experiment was carried out- was changed from floor to table.

  2. How does the sinkage depth of a tyre affect its rolling resistance ?

    The absolute uncertainties that were obtained in our experiment for the rolling resistance were low , this shows that the values that we have obtained are precise . Performing this experiment at a small scale makes the rolling resistance negliblie.

  1. Investigation into the relationship between acceleration and the angle of free fall downhill

    The same concept applies for the height of the ramp. By keeping these two variables controlled, the angle of the slope could be deduced and also controlled. The distance travelled was always controlled by marking a line on the starting point, this way the cart wouldn?t travel more than the distance measured.

  2. HL Physics Revision Notes

    path of the incoming rays a distance of 1.5x 1011m from the sun. -Varying solar constant -Earth?s elliptical orbit -Tilt of Earth?s axis -Weather -Altitude of the Sun in the sky -Season ?Albedo Hydroelectric Power: Distinguish between different hydroelectric schemes: 1.

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