• 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...

Introduction

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.

Middle

Results:

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.

Conclusion




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. Peer reviewed

    Catapult Investigation

    3 star(s)

    It was hard to read measurements from ruler. 5. The elastic band looses more potential energy every time it is stretched, this can affect the outcome. 6. Energy loss - (1) due to friction - air particles and the floor (2)

  2. 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.

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

    Graph 12 shows the modified stresses and strains for blonde hair. This graph does not show values of stress and strain decreasing. Graph 13 shows the modified stresses and strains for ginger hair. This graph has changed a lot. It reads much clearer.

  2. Mass on a spring - and investigation into resonance

    0.12m 0.0005m Not applicable 0.0005 0.42 So, according to our second experiment, k = 24.76N/m +/- 0.42% = 0.10N/m This means that the bottom end of our range is 24.66N/m. So the smallest difference between the value for k from the first experiment and the value for k from our second experiment is 0.64N/m.

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

    He should have the feeling that only adding very little force is needed to keep the rubber bung in motion, or otherwise the rubber bung is actually not in a constant angular speed. Data and data analysis: Mass of the rubber bung (m)

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

    injected, ingested, or inhaled, the radioactive isotope decays resulting in the emission of gamma rays. This gamma ray gives us a picture of what's happening inside the patient's body. However the components making up the gamma camera are the collimator, detector crystal, photomultiplier tube, position logic circuits and the data analysis computer.

  1. 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.

  2. EvaluationThis article of "What We Know About Police Use of Force" is helping in ...

    know with substantial confidence about police use of force mainly is - police use force infrequently. - police use of force typically occurs at the lower end of the force spectrum, involving grabbing pushing, or shoving. - use of force typically occurs when police are trying to make an arrest and the suspect is resisting.

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