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

The Pulley System Investigation

Extracts from this document...

Introduction

Raja Ali 10B                 Ms. Aleem

The Pulley System Investigation

Aim

My aim is to create a pulley system which must consist of one, two or three pulley systems so that the results are recorded.

I will also investigate and find the difference in the value of the force obtained for the three different pulley systems.

Hypothesis

I should be able to pick up 500g with one pulley but to make this easier I will use a pulley system, if I use one pulley that the force needed to lift this amount of weight should decrease by 25%. Off course this is my hypothesis

Apparatus

  • Nylon Rope (3 Metres long Rope)
  • Three pulley systems.
  • 500g mass load force meter. (Newton Meter)
  • Clamp, Boss, Retort Stand.
  • Loop and Weights.

Safety Points

The first thing that you must always be concerned about should be the safety of yourself and people around you. Safety should always be looked at seriously as this could alter the results and the test could turn unequal and unfair.

You must always be concerned about Safety as this could always make the test more equal and Fair.

...read more.

Middle

Adaptations - To help make the experiment more efficient, the stand was were unstable; I got a friend to hold down the experiment whilst i was pulling the Newton meter.

May I also mention that standard procedure may be different to the procedures which conclude in a Science Based Service.

Science Based Services have much more detailed and quality instructions as well as equipment which give much more accurate readings. These accurate data include materials such as a digital Newton Meter which gives you an accurate reading to three decimal places.

...read more.

Conclusion

We also required adding more pulleys to get a more accurate result as more pulleys would have given us a more appropriate result.

In the Industry

In a laboratory you would use a pulley system simply to get the over all picture. It would be very small machine and the results taken would not be accurate.

In a real world industry people have to move very large heavy items and materials. In an industry there are special separate companies which have the business of just moving items with huge pulley like machines. They take accurate reading of all there uses and determine through past experience of how much weight will be picked up and take on a job with the appropriate amount of pulleys. They have also got more stable and secure equipment which is checked regularly. The difference is our equipment is low graded and has not been specified for any specific weight criteria like there. We are also taking experiments before any real work can be taken up. But they have already got all the information required and choose there machine depending on the weight intended.

Pulleys are found usually on cranes which help pick loads vertically but they use ropes, wires and chains!

...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)

    We discounted totally inaccurate results. Our experiment that we planned needed to be fair in order to get an accurate set of results. In order to do this we kept strict precautions on some factors. They were; 1. The same weight fired. Different weights could cause different results.

  2. Young's Modulus of Nylon

    0.011 0.020 1.83x109 Region of Elasticity 1.962 2.69x10-8 7.29x107 0.550 0.033 0.060 1.22x109 2.943 2.69x10-8 1.09x108 0.550 0.047 0.085 1.28 x109 3.924 2.69x10-8 1.46x108 0.550 0.059 0.107 1.36 x109 4.905 2.69x10-8 1.82x108 0.550 0.064 0.116 1.57 x109 5.886 2.69x10-8 2.19x108 0.550 0.075 0.136 1.61 x109 6.867 2.69x10-8 2.55x108 0.550 0.084

  1. Helicopter Investigation

    It shows us where to cut and fold and what measurements are involved. Diagram 1.2 The diagram, which has been drawn above, has not been drawn to scale. Once I draw out the drawing of the paper helicopter on the A4 sheet of paper, carefully done using a ruler of course.

  2. 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.

  1. Multi-bladed Pumps. Does the number of propellor blades affect the efficiency of a ...

    Efficiency At this point it is important to mention that I am concentrating on the efficiency of the propeller at displacing water. Percentage efficiency = useful power output / power input � 100%, or rewritten in symbols, ? = Puseful out / Pin.

  2. In this report I will start by exploring the history of the Computerised Tomography ...

    Impactscan.org suggests that, the X-ray tube produces radiation which consists of long and short wavelengths. However, the filter removes long wavelength radiation as this does not play a role in CT image formation, but increases patient dose. We know that long wavelength radiation is less energetic, and as a result passes through the body and cannot be detected.

  1. The life and work of Isaac Newton Sir Isaac Newton has been considered one ...

    To do this Newton knew that he would have to use very advanced mathematics. To solve the mysteries of the universe, he would have to learn everything he could about the subject, and according to Ferris (1989) although Newton did not realize it at the time would have to invent his own mathematics - the calculus.

  2. Parachute Investigation

    were the ones available which weren't too light and caused the parachute to drift and spin a lot, or too heavy and made the parachute crumple. Results will be recorded to 2 decimal places as this gives reasonable accuracy and allows comparison between results, but makes points relatively straightforward to plot on a graph.

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