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

To get any object to move in a circle you have to apply a force to it

Extracts from this document...


Centripetal force of a rubber bung

Aim :

To get any object to move in a circle you have to apply a force to it.

Methods :

With your experiment you don't mention anything about controlling or measuring the force. All you have measured is the (average) period of the object moving in a circle. From this you can calculate the average speed and acceleration.

To turn this into an investigation you would need to measure the force pulling the bung into the circular path. i.e. the tension in the string.

At the moment, if you put more effort in the bung will go

...read more.



There is a fairly simple formula for cicular motion.

F = (m X v2) / r

F = force (Newton)
m = mass of bung (kg)
v = speed of bung (m/s)
r = radius of circle (m)

You must make sure you use the correct units (m not cm, kg not g) to get the formula to work correctly.

The Force is constant: 90 gram = 0.9 Newton approximately.

The mass of the bung is also constant.

...read more.


it is a straight line which means the graph and the results are correct and they are ok and you will be able to use these for a future reference when explaining the stuff in the anlysis.

Another method I've seen used is to have the string pass through a tube. On the bottom end of the string you attach a weight. You twirl the bung around above your head whilst holding the tube until the forces are balanced. If you spin it too slowly the weight drops down, if you go too fast it rises up. You need to adjust the speed of spinning until the weight balances at the correct point.

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Mechanics & Radioactivity 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 AS and A Level Mechanics & Radioactivity essays

  1. Factors affecting the speed of a trolley Travelling down a ramp.

    The following steps show you how to calculate the acceleration of the trolley using the ticker- timer tape. 1.) First cut the strip into 10- dot sections. Remembering that each section would take 0.2 s (= 10/50 s.) 2.) Them measure your first 10 - dot section with a ruler and write down measurement.

  2. Centripetal motion. The objective of this experiment is to verify whether the tension ...

    It was very formidable for the rubber bung to swirl in a purely horizontal plane. Even if it could, during the 30 revolutions, the motion of the rubber bung might alter and not be swirled in a horizontal plane for some revolutions.

  1. Investigating the factors affecting tensile strength of human hair.

    This sample of hair should have broken at 80g not 90g. This did not happen. This may have been an error in not measuring correctly. Graph 4 shows ginger hair. Ginger hair requires about 100g to extend up to about 60mm before breaking.

  2. Helicopter Investigation

    This information of course was later found out after I was more than half way through the experiment, so I had to decide whether to go ahead with doing the experiment all at a drop of 2 metres and 3 centimetres or change it and have half the results at

  1. Use of technology in a hospital radiology department. The department of imaging is one ...

    Reference 1. UCLH hospital http://www.uclh.nhs.uk/Our+hospitals/ 2. UClH hospital home page http://www.uclh.nhs.uk/About+UCLH/Governing+Body/home.htm 3. CT scan picture http://www.cancerhelp.org.uk/cancer_images/ct2.jpg 4. about CT scan http://www.netdoctor.co.uk/health_advice/examinations/ctgeneral.htm 5, University College London hospital annual review 2006/2007 6, PUPA private health care http://www.bupa.co.uk/ 7, about X ray http://en.wikipedia.org/wiki/X-ray http://www.colorado.edu/physics/2000/xray/index.html 8,about MRI scan http://www.netdoctor.co.uk/health_advice/examinations/mriscan.htm http://www.nhsdirect.nhs.uk/articles/article.aspx?articleId=556 9, MRI scan diagram http://images.google.co.uk/images?q=+MRI+SCAN&svnum=10&um=1&hl=en&start=20&sa=N&ndsp=20 10.

  2. Given a Batch of Factory Springs, Estimate the Average Spring Constant and Uncertainty of ...

    I will then repeat this twice for each of the three springs. I will repeat this using the loading unloading technique. This method is acceptable as I will not be exceeding the limit of proportionality and there will therefore be no permanent stretch.

  1. The aim of this experiment is to investigate the patterns of circular motion using ...

    Place the right weights on the fishing wire, to add up correctly. 3. Make accurate calculations to at least 2 decimal places. Apparatus List 1. Ruler 2. Bung 3. 50 gram weights 4. Fishing Wire 5. Plastic Tube 6.

  2. Mass on a spring - and investigation into resonance

    1.61 0.499 2.00 1.2 1.2 1.2 1.20 1.44 We noted that, in general, that frequency decreased with mass. Theory The theory is that resonance occurs at the point where the natural frequency of the spring system is equal to the frequency of the signal generator.

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