• 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.

    These two graphs show the basic trend. Graph 9 shows the normal trend until the stress value gets to 150Nm-2. Then it decreases and goes back on itself. This should not happen. The reason for this is explained above. There is an error in the extension averages.

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

    As the time was recorded for 30 complete revolutions, which was quite a long time, the one who swirled the rubber bung might not be able to keep the angular speed of the bung constant. This lowered the accuracy of the experiment.

  1. Mass on a spring - and investigation into resonance

    However, we need to consider the following errors. Errors - first experiment Source of error Average 1/2 smallest division 1/2 range Use % Signal generator (0.2 hz smallest division) 1.43 0.1 hz (1.5-1.4)/2 = 0.05Hz 0.1Hz 6.99 Scales (0.01 smallest division)

  2. Drayton Manor Theme Park: Centrepedial Force

    probably seen footage of astronauts floating around space shuttles, this is because they too are in free-fall but are travelling so fast horizontally they never come in contact with the earth.7 (7) A common misconception about weightlessness, more properly termed microgravity7, is to think of things being weightless when there

  1. Serving Newton

    (Various authors) "that if an unbalanced force acts upon a body, the body will be accelerated; the magnitude of the acceleration is proportional to the magnitude of the unbalanced force, and in the direction of the acceleration is in the direction of the unbalanced force."

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

    It use a magnetic filed and radio waves together with an advanced computer system to build up a series of image, each one showing a thin slice of the area being examined. These image are very detailed and can show both bones and soft tissues in the body and can therefore give a great deal of information.

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