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

Physics Pendulum Internal assesment

Extracts from this document...

Introduction

Measuring gravity using a pendulum

Introduction

In this experiment, I will be measuring the time it takes for a pendulum to oscillate and use the data to calculate the acceleration of the ball. With small swings a period of motion can be described using the equation:

image07.png
so this equation can be arranged to find gravity by using the pendulum to work out the period (T).

Hypothesis

I predict that the end value of gravity should always be close to 9.8 due to tests, as we know that acceleration due to gravity is approximately 9.81 image08.pngimage08.png, also the period will have increased due to the length being longer in the string

...read more.

Middle

Method

  1. Fix the string with the ball to a clamp as shown in the diagram above and afterwards the whole thing should look like the picture.
  2. Practice timing and using the pendulum, make sure you measure as soon as the string passes through the centre point then out to the right, then to the left and then back to centre, and that counts as one full period, make sure that the string stays in one plane and doesn’t wobble.
  3. Prepare a results table with columns l, T10, T and T2 and gather 8 sets of readings.
  4. Measure the Length of string.
  5. Release the pendulum and record for 10 complete periods.
...read more.

Conclusion

image12.pngimage12.pngX 100 = 6.02 % (2 d.p)

And that is not too big as to what I thought the value would be and it relates to my hypothesis so I wouldn’t need to change it. However,

if I was to take this experiment again I would make sure that I will measure the angle that the ball is released from and that there is no change in the plane of the pendulum and make sure I take multiple sets of readings at a time.

...read more.

This student written piece of work is one of many that can be found in our International Baccalaureate Physics 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 International Baccalaureate Physics essays

  1. Investigate the factors affecting the period of a double string pendulum

    As you can see from the graph of y=logx (base 10) it gives a straight negative downward sloping trend line identifying the relationship between the distance l and the period of the metal bar as inversely proportional. As you can see from the arrow bars representing the potential error of

  2. Suspension Bridges. this extended essay is an investigation to study the variation in tension ...

    9 cm T1 = = = = 1.1863 � 0.02 N String Type 1: - Nylon String (Relatively inelastic) Horizontal Distance (x) from the Rigid Support 1 � 0.05 (in cm) Length of the string = 140 cm Length of the string = 144 cm Vertical Distance (y1)

  1. Pendulum work out the value of acceleration due to gravity (g), by using ...

    * Small wooden blocks- Two small wooden blocks were being used. This was due to the reason that the clamp could not directly hold the pendulum due to the thinness of the string. Thus the string was placed between the wooden pieces and the attached to the hook of the string.

  2. Period of a Pendulum

    An electric scale was zeroed and the bob was weighed (+ 0.01g). 3. The bob is measured to an amplitude of 6cm 4. Simultaneously, the bob is released and the stopwatch started 5. After twenty swings has passed, the timer was stopped as well as the bob.

  1. investigate how the length factor of a pendulum string will affect the time period ...

    We will keep the mass constant simply by never changing the bob on the pendulum, and the we will keep the angle relatively controlled by measuring the same angle before every pendulum swing. The acceleration due to gravity, g, will be assumed to remain constant around 9.81 ms-2 because we

  2. Investigating the Oscillations of an Obstructed Pendulum

    difference in this context; there is a percentage error of 18.34%, and this is a large error. The only possible reason for this was that there were both random and systematic errors in the experiment. If there were no random or systematic errors, there would have been no error in

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