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

Pendulum experiment

Extracts from this document...


Pendulum experiment Aim: To see the effect length has on a pendulum's period. Prediction: I predict that the shorter the length of string, the shorter the time it takes for the pendulum to complete one period. The longer the length of the string, the longer the time it will take to complete one period. Equipment needed for experiment: -Clamp -Stopwatch -Bob/Ball -Metre ruler -String Obtaining the results: I will be measuring the length of the string in 10s, so that I can obtain a wider range of results. I will then take 10 readings, and calculate the average time of osocilation for each length, making it a fair test. ...read more.


Time (secs) Average Length (cm) Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 10 0.91 0.87 0.92 0.98 0.92 0.92 20 1.06 1.13 1.1 1.04 1.02 1.07 30 1.3 1.41 1.33 1.33 1.35 1.34 40 1.72 1.32 1.4 1.34 1.38 1.4 50 1.84 1.33 1.7 1.69 1.81 1.67 60 1.7 1.69 1.77 2.03 1.7 2.04 70 1.93 2.13 1.98 1.86 2.28 1.88 80 2.23 2.05 2.02 1.95 1.94 2.04 90 2.29 2.13 2.34 2.25 2.2 2.24 100 2.02 2.34 2.55 2.53 2.41 2.37 Conclusion: From the results I have gathered I can see that the longer the length of the string, the longer it takes for the pendulum to complete one period. ...read more.


If the period for a pendulum of 40cms was 1.4, then the time of the period for the pendulum of 10cms should be 0.7. I tested this theory with my results and found that it was correct, though not entirely accurate, It was roughly the same. The reasons for the average time not being entirely accurate could be a problem with the stopwatch, and also anything measured in this way is not going to be 100% accurate. The results that don't fit the pattern of the rest of the graph are called anomalies. An example of an anomaly on my graph could be for length 60cms. The time suddenly jumps up, but then back down again. This could be a problem with calculating the average or maybe one of the trials was extremely off-target. ...read more.

The above preview is unformatted text

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

Here's what a teacher thought of this essay

This is a 3 star piece of work. The procedure followed would give valid evidence for the question asked. There is little scientific information within the writing. The prediction should not merely say what you think will happen, but to score more highly, why? The conclusion should also be backed up by scientific information.

Marked by teacher Kate Gardiner 13/03/2013

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 aim of this experiment was to compare the elasticity of arteries and vein ...

    4 star(s)

    This was then measure and recorded. From here on, 20g weight were added, each time being measured and recorded, until the amount of force applied on the artery reached 300g. Once this was completed, the weights had to be removed, again in 20g increments (from 300g to 0g), so that

  2. Marked by a teacher

    Physics Pendulum Experiment

    3 star(s)

    To make this possible we had the length of the string and its maximum extent in length so that we had a set length that was easy to remember, and if we had to redo our test or repeat our actions then we could easily pick up a stable and unchanging measurement.

  1. How does the weight of an object affect the friction it has on the ...

    although the 0.47, was a bit lower than the others, but I still included it to find the total average. Comparing the gradients and the coefficients of friction, I have found very different results. This could be due to many factors, the use of different units, and the margins of error in the graph, and of course all experimental error.

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

    with any of the wires which may cause a harm or irritation to the skin.

  1. The Physics of Paper Helicopters

    = m ln(mass) + c (but ln(time) = 1.24, ln(mass) = 1.5, and m = -0.97) ==> 1.24 = -0.97 x 1.5 + c ==> c = 2.695. Therefore, n = -0.97 and 2.695 = ln(K) ==> K = e2.695 = 14.806 Therefore, the relationship that we have derived is: Time = 14.806

  2. Period of Oscillation of a Simple Pendulum

    I believe that air resistance was the main factor, which influenced this result. There was a clear pattern emerge. As the angle increases the time increased in an almost predictive pattern. However, this pattern did not emerge until after 40�.

  1. How does an increased surface area change the time taken for a mass to ...

    1.18 1.17 1.14 1.16 130.00 0.72 0.83 0.72 0.76 1.11 1.24 1.18 1.18 140.00 0.91 0.87 0.78 0.85 1.12 1.21 1.24 1.19 150.00 0.84 0.93 0.93 0.90 1.28 1.27 1.28 1.28 160.00 0.82 0.93 0.82 0.86 1.32 1.29 1.29 1.30 170.00 0.94 1.02 1.09 1.02 1.38 1.32 1.32 1.34 180.00

  2. Investigate the factors affecting the rate of descent of a parachute.

    The more massive the object the higher its speed will be until it encounters terminal velocity. Therefore, more massive objects fall faster than less massive objects because they are acted upon by a larger force of gravity. For this reason they accelerate to higher speeds until the air resistance equals

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