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

To Measure a Force of Friction and To Compare the Area of Contact.

Extracts from this document...

Introduction

The Force of Friction Aim To measure a force of friction and to compare the area of contact. Apparatus * Newton Meter - 10N in 0.1N intervals * Rule - 1M in 0.1M (1CM) intervals * 100g weights X4 * 10g weights * Wooden Board * Stand and two clamps * Pulley wheel (mounted onto a board) * Wooden Block Diagram Method Set up apparatus as shown above. Prepare blocks, which measure 100mmX100mm, 150mmX100mm, 200mmX100mm, 250mmX100mm and 300mmX100mm. Place the correct amount of weights on top of the smallest block so that the block weighs the same as the heaviest block. Place the block near the end and pull the board at a constant speed. ...read more.

Middle

Prediction An increase in the size of the block will decrease the force of friction in direct proportion to each other, this is because as blocks get bigger there is more surface area to spread the weight on and this means that there will be a bigger area of contact. I also think this because we did some preliminary testing for an experiment to measure a force of friction and to compare that force to the weight of the sliding body. The results that we got from this experiment showed that as the weight of the block increased, the friction increased Preliminary Results Weight of the block (g) ...read more.

Conclusion

Evaluation My prediction was wrong; I know this because my results stayed the same all of the time. The graph also shows this as it is a horizontal line and if my prediction was correct the graph would go diagonally upwards. There is an obvious trend in this experiment, which is also shown by the graph in, by the fact that it is a horizontal line. My results were all the same which shows that I did the experiment correctly. You can get another question from this experiment and that is, "What would happen if the original weight of each of the blocks did not change?" ...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

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. Investigation into Friction.

    meter will be 28 N for the smooth surface, and for the rough surface, when the total weight 73.28 N, the reading on the force meter will be 30 N. Fig 3. Selecting the appropriate equipment There are several ways that we could approach this experiment.

  2. Investigate how the weight of an object affects the force required to overcome friction.

    Point 6: % ERROR = ? X * 100 X % ERROR = 0.33 * 100 5.9 % ERROR = 5.59 % (3s.f) Point 7: % ERROR = ? X * 100 X % ERROR = 0.17 * 100 5.14 % ERROR = 3.31 % (3s.f)

  1. Investigating Sliding Friction: the effect of weight on sliding friction between a block and ...

    10.6 5.1 5.1 5.4 5.2 11.6 5.6 5.7 5.9 5.73 12.6 6.5 6.7 6.6 6.6 Analysis On the previous page was my graph to show the results from the investigation. I showed that as the weight of the block increases the force of friction acting on the block also increases.

  2. Liquid Friction.

    We can now use the first equation to give an estimate of the unknown mass. From my calculations, the unknown mass is 0.0161kg This result seems reasonable, but I cannot ensure that it is reliable since the density of steel may be different from the other balls.

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