• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9

The Pendulum Investigation

Extracts from this document...

Introduction

Lewis WrightThe Pendulum Investigation25th July 2001

Aim:

To calculate the periodic time for varying lengths of a pendulum.

Introduction:

I am planning to begin an investigation to measure the period of time for a pendulum of any weight as that doesn’t matter, to take one swing. The measurements will be made by hanging a pendulum or bob from a clamp using different measurements of string and seeing how much time is taken for one swig using a stop clock.

Fair Test:

I will make the experiment fair by using a piece of paper stuck on the clamp with the angle from which I will start my pendulum swinging making sure I and I alone will count the amount of swings. I will also make sure that I stand the same place as I count so I can see properly where one swing ends and the next one starts.

Equipment:

I have chosen my equipment carefully, I am going to use a clamp, a stand, a stool, a ball of string, some writing equipment, drawing equipment, a patractor, scissors and a pendulum with a hole in it.

Diagram Of Equipment:

Prediction:

...read more.

Middle

Results:

                              Time for 10 swings sec  

Length in m

1

2

3

4

5

Average time for 10 swings

Average time for 1 swing

1.2 m

23.07

23.07

23.20

22.04

23.04

23.26 sec

2.33 sec

1.3 m

25.40

25.70

24.80

24.40

24.30

24.92 sec

2.49 sec

1.4 m

27.00

26.90

27.40

26.80

27.50

27.19 sec

2.72 sec

1.5 m

28.30

27.80

28.40

28.50

28.30

28.26 sec

2.82 sec

1.6 m

27.20

29.80

30.00

24.30

29.40

29.14 sec

2.91 sec

1.7 m

30.70

30.10

29.10

29.80

30.80

30.00 sec

3.00 sec

1.8 m

31.80

31.20

30.10

30.90

31.60

30.60 sec

3.10 sec

1.9 m

31.80

32.30

31.90

30.90

31.60

32.00 sec

3.02 sec

2.0 m

32.30

32.40

31.50

33.10

32.60

33.40 sec

3.34 sec

         This chart proves my prediction was correct however my predicted table was quite a way off.

image00.png

Conclusion:

          The graph has a strong positive correlation and has two anomalous results, this graph means the longer the piece of string the longer the time taken for one swing.

Evaluation:

         I thought this experiment went very well and the test was as fair as                      

it could be. The graph and table were very accurate however the        

first graph I did in rough took me a long time to do. I improved my

results by

...read more.

Conclusion

Results:

                                                         temperature

                                      0*C   20*C 30*C  40*C  50*C   60*C

Time Taken in mins

-        

2.03

1.48

0.58

1.05

1.28

Reaction yes/no

No

yes

yes

yes

yes

Yes

Graph to show amount of time taken for the pepsin to break down at varying temperatures.

These results prove that my prediction was correct and that the reaction happened faster around 40*C.

Conclusion:

In conclusion the graph has a negative correlation. The smallest time taken was 58 seconds at 40*C which means it was the best temperature for the pepsin. The worst time was at 0*C this was the worst times because the reaction was so cold it most probably froze.

Evaluation:

This experiment was rather hard, it was very hard to get the temperatures right in the water bath and to make a fair test was quite a challenge. The results are also very hard to get as you have to start the stop clock as soon as you add the pepsin to the test tube. I made my results as accurate as possible by repeating the process over and over again. The method was very well done and I knew what I had to do as soon as I read the title. The problem with my results are they aren’t as accurate as they could be and can’t hold a firm conclusion.                    

image00.png

...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. Determining the acceleration due to gravity by using simple pendulum.

    The time starts and stops back until the ball hits the pad which sends the message to the time to stop the time. The timer will give you the time taken, T for a particular length chosen. THE THEORY BEHIND THE EXPERIMENT Let L= length (m); T= time taken; speed, V=L/T; G= acceleration due to gravity.

  2. Period of Oscillation of a Simple Pendulum

    This is enough conclusive evidence to say that when not in a vacuum, 40� is the approximate maximum for the results not to be influenced by air resistance. This is experiment would have been best performed where there is no air - a vacuum.

  1. Squash Ball and Temperature Investigation

    the result from the metre rule allowing less room for human error and anomalies and more accurate and precise results (as the higher it bounces, the less you or your partner has to crouch down to see where the ball bounced to on the metre rule allowing for less inaccuracies

  2. Practical Investigation Into Viscosity

    This enabled me to investigate the surface area, mass* and how this effected the rate of descent. The results of experiment 1 are as follows: Very Small Distance Timed (cm) Time taken(s) for ball bearing to pass through distance measured 1 2 3 Average 0-20 0.19 0.21 0.20 0.200 10-30.

  1. Investigating the viscosity of liquids.

    The density of the fluid will thus decrease. As there are fewer molecules per unit volume, the viscous drag that resists the downward movement of the ball bearing will be less, as there are fewer molecules per unit volume to block the movement.

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

    This is because 30 oscillations is sufficient to reduce error and also allows me to carry out more readings, because it doesn't take as much time, which is one of the constraints I face in this investigation. It also needed to be decided how to count one oscillation.

  1. Investigating the amazingness of theBouncing Ball!

    A Dr Daq system measures the time between each bounce by the sound produced by the ball. The Dr Daq microphone will pick up these sounds inducing a voltage which will produce a voltage against time graph on the picoscope programme on the laptop.The The Dr Daq system will be

  2. Strength of a string practical investigation

    Set up wooden bridges at ten centimetres from the G-clamp and collect string and clamp it onto the G-clamp and extend the string so it is hanging over the pulley. 6. Attach mass hanger to the end of the string which is at the end of the pulley and

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