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

Investigating the time period of a pendulum

Extracts from this document...



Investigating the time period of a pendulum


  1. String
  2. Ruler
  3. Weight
  4. Clamp
  5. Desk
  6. Time (preferably a stop clock)

The time period of a pendulum is the time taken for the pendulum to swing from one point to another point, for instance

...read more.




This experiment calls for me to record this time period, however I feel it is too short, so I will time 20 time periods for accuracy. I will then take this number and divide it by 20 to give one accurate time period.

When doing this experiment I will need to think of two independent variables:

  1. The mass of the pendulum
  2. The length of the string that attaches the pendulum to the clamp.

Through my own preliminary experiment I will change the length ten times, varying from 1m 3cm – 13 cm at approximately 10cm intervals. For this experiment I will keep the mass the same, the original mass of the pendulum, 34.87g. For my preliminary experiment when I change the mass, I will change the mass ten times varying from 74.52 grams to 26.5g.

...read more.


In our final experiment we will use 11 lengths from 110cm to 10 cm, using intervals of 10 cm. I will use a constant mass as the pendulum, and the displacement length will be 10 degrees. I chose these values because the lengths are spread out, to create a fair test. I will time 20 time periods to make it a fair test.

To help make it even fairer, I will repeat the experiment three times and take an average of the results.

For the prediction table, but not graph, it is helpful to note that as the equation works only in metres, the values, which would be in centimetres in my experiment, have been changed to metres.

Prediction table:

Length (m)   Gravity (N/kg)     Time period (seconds to 2 d.p.)
1. 1.10           9.81                      0.71
2. 1.00           9.81                      0.64
3. 0.9             9.81                   0.58
4. 0.8                 9.81                       0.51        
5. 0.7                 9.81                       0.45
6. 0.6                 9.81                       0.38
7. 0.5                 9.81                       0.32
8. 0.4                 9.81                       0.26
9. 0.3                 9.81                       0.19
10. 0.2                 9.81                       0.13
11. 0.1                 9.81                       0.06                      

Dina Rickman – Physics Plan

...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

    Additional Science - What affects the period of a pendulum?

    3 star(s)

    5- Make sure that your partner drops the ball bearing the same time you start the stopwatch. 6- Stop the stopwatch as soon as one oscillation is over. 7- Once all the different ball bearings have been tested, repeat the test once more to see if the results are similar.

  2. What affects the time period of a pendulum.

    This acceleration can be calculated by the formula a = -gA. The angle size can also be linked to the arc length, this is shown in the formula, x = LA. With L being the length of the string. This leads us to the equation for acceleration of a simple pendulum bob a = -g/L x.

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