• 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

    The Simple Pendulum Experiment

    4 star(s)

    The stool is placed on a table/workbench. The length of the pendulum's string is kept constant during this experiment The mass of the pendulum is variable for this experiment I will use a ruler (accurate to �0.0005m) to make sure the length of the pendulum's string for this experiment is 1m.

  2. Marked by a teacher

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

    3 star(s)

    also be increased, therefore the pendulum would take a longer time to complete one oscillation. My results have proven this to me. EVALUATION My results that I have obtained are fairly accurate but which is surprising because of the method and conditions we operated under.

  1. Peer reviewed

    length of a simple pendulum affects the time

    4 star(s)

    This means there is a resultant force on the bob to the right. If the bob is moving to the right the force makes it accelerate and the speed increases as it moves towards the centre. If the bob is moving to the left the force decelerates it and it slows down.

  2. Peer reviewed

    Investigate the factors which affect the period of one swing (oscillation) of a simple ...

    3 star(s)

    In the case of length, I did the ranges 5-50, going up in 5s, and in the angle of release I did 10-90�, going up in 10s. Variables 1. Length of string Independent: Length of string Dependant: time period of 10 oscillations Control: * Angle of release * Height from ground * Position of pendulum * Mass of bob 2.

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

    A free fall timer is used in this experiment. The figure below shows a brief mechanism of the experiment. The figure above shows the experiment of the free falling body. It concerns with the length and time taken for a mass to travel the length.

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

    This means that there can be no or minimal change in gravitational acceleration, degree of displacement, mass air resistance and tensile force. The tests should be conducted as accurately as possible. In order to make sure the reaction times for the stopwatch have a minimal effect the period for10 oscillations should be measured.

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

    The professor was dismayed to only hear one thud - they had hit the ground at the same time!.." Taken from Bev Aldridge's PGCE Notes You may say a feather drops slower than a cannon ball, but it only flutters to the ground because of air resistance.

  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

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