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

To investigate the factors that affect the time of swing in a simple pendulum, using a small weight and a length of string attached to a fixed point.

Extracts from this document...


Aim: To investigate the factors that affect the time of swing in a simple pendulum, using a small weight and a length of string attached to a fixed point.

Background Information: Dictionary Definition:
n1 a weight suspended so it swings freely under the influence of gravity. 2 such a device used to regulate a clock mechanism.

”Pendulum, a mass, called a bob, suspended from a fixed point so that it can swing in an arc determined by its momentum and the force of gravity.”

-Columbia University

A pendulum can be defined as anything suspended from a fixed point that can swing in an arc. This can be anything from a watch on the end of a string, to a huge demolition crane. These types of objects are
seen often around the world. A pendulum generally
swings from one height, gains momentum, follows an
arc through and decelerates at it goes against gravity
back up to an altitude similar to that of its release
        The object at the end of the pendulum is called
a bob.

...read more.




1 weight
1 clamp stand
2m length of string

Meter rule

Set up the equipment as follows:

Set up the clam stand, with the horizontal pole sticking over the table edge. Loop one end of the string in such a fashion that it may be freely adjusted in length. Attach the weight to the end of the string, so that it hangs freely over the edge of the table, without slipping or causing the clamp stand to topple. If needed, place a few heavy items on the base of the clamp stand to keep it upright. The equipment should now be set up as shown in the diagram.


The following is a list of the variable that will be used in this experiment:

Weight Mass:

Angle of release:20°

Length of string (cm):10, 20, 30, 40, 50, 60, 70, 80, 90, 100

Number of swings per reading: 10 (time/10 to give accurate reading)

To keep this a fair test, the mass of the weight will remain the same, alongside the size and shape. The same string and clamp stand will be used.

...read more.


Note:The length must be measured from where the string meets the end of the clamp, to the centre of the weight.

2.        Place a protractor underneath the end of the clamp stand, so that the 90° angle mark is directly behind the string, which is hanging freely straight toward the centre of gravity.

3.        Ensure the stopwatch is set to 0:00. Then, with the assistance of another person, grasp the weight and pull it back so that the string is tilted 20°. This should mean the string is either at 110° or 70° mark on the protractor.

4.        Simultaneously release the weight and start the stopwatch. One swing counts where the pendulum swings from one side to the other, then back again, reaching its original point. Let it do this 10 times, then stop the stopwatch. Record this time in the table.

5.        Repeat this procedure, so that you have 2 results for this. Work out the average (mean) of the 2 results. Note: To make the results more accurate, repeat this more then twice. Then remove any phantom results, and calculate the average from the remaining.

6.        Repeat the above for each of the given variables.

...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)

    My results also confirm to me that my original prediction was correct, because as the length of the pendulum increases, as does the time period of that pendulum and this is proven in my table of results, for example the average time period for a pendulum with a length of

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

    by the following formula L=UT+1/2G T� Where U= initial velocity which is always zero in this case. If U=0 then L=1/2G T� To find G G=2L/ T� TABLE OF RESULTS L, LENGHT (m) T, TIME TAKEN(s) G, ACCELERATION DUE TO GRAVITY (m/s�)

  1. This project involves testing a catapult by using a rubber band to catapult a ...

    is always going to be constant - 1-3 elastic bands (I will make sure they are all the same size/length/thickness) - 1m rulers to measure how far the mass travels. If I use a 30cm ruler the for some of the further measurements I would not be able to measure

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

    The stopwatch has an error of � 0.01 seconds, which means that any reading recorded from the stop watch will carry this uncertainty. The meter rule has an error of �0.001 meters, which also means any length will have an uncertainty of �0.001meters.

  1. Mechanical Properties of a Meter Rule

    tables) to hold the rule. This would also make it quicker to change the distances as the two objects would just need to be moved closer. 2. If the rule was securely glued together they would no longer slip, but the tendency to do so would exist just the same.

  2. Strength of a string practical investigation

    platform and nothing is kept at the edges of the table as it may be knocked over or fall and all equipment is secured properly to avoid injury. Variables: The variables will be extension & force (masses), thus this will directly affect stress and strains.

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

    I will draw a graph of P against L. As they are directly proportional to each other, the predicted graph should show a straight line through the origin: Method - I will firstly set up a clamp stand with a piece of string 50cm long attached to it. - A mass of 50g will be attached securely to the

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

    A CBL2 data logger- this will be connected to the light gate , the data measured by the light gate such as the velocity and time at which the picket fence passed through the light gate can then be displayed as a graph on the data logger.

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