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

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

Extracts from this document...

Introduction

Physics – Coursework

Investigating factors which affect the period

time of a simple pendulum

Plan

Aim: For my GCSE science coursework we are going to investigate which factors affect the period time of a simple pendulum.

Method

We are going to do three different experiments, where:

  • Firstly we will change the weight attached to the string
  • Secondly we will change the angle that we will drop the string from
  • Thirdly we will change the length of string

On the first experiment, in which we change the weight, we will use five different amounts of weight, starting with 100g and going up 100g each time until reaching 500g. For every different amount of weight record the time for 10 swings. We will then do this for the changing of angles, starting at 20° and then going up, 40°, 60°, 80°, and finally 90°. Again recording the time taken for 10 swings. For the third and final experiment where we will change the length of the string, we will start at 5cm going up 5cm each time until reaching 25cm.

When we change the length of string, for example, we must make sure that the weight and angle stay the same every time.

...read more.

Middle

Time taken for 10 swings (seconds)

Time taken for 1 swing (seconds)

100

12

1.2

200

11

1.1

300

11

1.1

400

11

1.1

500

9

0.9

Changing angle – length of string 30cm, mass 500g

Angle (°)

Time taken for 10 swings (seconds)

Time taken for 1 swing (seconds)

20

13

1.3

40

13

1.3

60

13

1.3

80

12

1.2

90

13

1.3

Changing length of string – mass 500g, angle 45°

Length of string (cm)

√ℓ (cm)

...read more.

Conclusion

Factors, which may have affected the accuracy of my results, include:

  • Error in measurement of angle. This proved difficult to measure as the protractor attached to the clamp was not fixed in place correctly and may have give inaccurate results
  • Error in measurement of string. To improve the accuracy of this I could have off the points off the points with a pen to make sure they were as accurately measured as possible.
  • Human reaction time. Depending on human reaction time, the measurement of the period time could have been measured inaccurately, when setting the stopwatch.
  • Recording of more swings. I could have recorded more swings of the pendulum as it would have been much more accurate and give more results

This procedure is relatively reliable, not including human error, and so I can strongly conclude from these results that, the only factor, which affects the period of a simple pendulum, is its length. As the length increases, so does the period.

...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

    Which factors affect the time period of the swing of a pendulum?

    3 star(s)

    Firstly I set up the clamp and stand with the pendulum set up in the clamp at the correct height for my first reading. 2)

  2. Peer reviewed

    length of a simple pendulum affects the time

    4 star(s)

    This only occurs when the pendulum is in the middle of its swing, so for the rest of the time the two forces are unbalanced; hence the bob swings back and forth. The two forces are equal and opposite. This means there is no resultant force on the bob.

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

    as it falls. By tradition, this is the method we have commonly ascribed to Galileo Galilei. In this experiment, Galileo is supposed to have dropped objects of varying mass from the leaning tower of Pisa and found that the gravitational acceleration an object undergoes is independent of its mass.

  2. To investigate the time taken for the pendulum to oscillate for a time period.

    lengths, as the string would not correctly wrap around the wood to give us exactly the right string length. Although our results were therefore a little uneven and untidy the results were still valid as we took them at an average interval of 3-4 cm ranging from 8cm to 52cm and in total taking 12 readings.

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

    The measurement of the angle of the runway was also measured using trigonometry instead of using an angle measurer , as I can measure the height and length of the runway more accurately than the angle of the runway. Results These tables are the results from my experiment.

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

    (Roger Muncaster). I found that measuring the amplitude of displacement accurately was not practical and it was very easy for human error to occur when measuring. I timed how long it took for a simple pendulum of 0.800m in length to complete 30 oscillations when displaced from 5� and then

  1. FACTORS AFECTING SIMPLE PENDULUM`S PERIOD

    1.488 0.01 The results above shows I have quite good results and I just need to draw them on a scatter graph to investigate the effect of mass on the period and as we can see according to Galileo's formula mass has no effect on the period and lets see if I can prove that with those results obtained earlier.

  2. What affects the time period of a pendulum.

    the effects of gravity will be slightly different Stay in the same area of the earth as much as possible. Human error Human error between releasing the bob and starting the stopwatch. Make sure the same person does each task every time, use a standard pre-release method, i.e. 3,2,1, go.

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