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

This investigation aims to find out which liquid the ball bearing will fall quickest or slowest through.

Extracts from this document...

Introduction

Viscosity Coursework

Aim of Investigation: - To find out which liquid the ball bearing will fall quickest or slowest through

The Variables (The factors that could change the results are)

Name of variable

Input or Outcome

Distance

Input

Liquids

Input

Forces

Input

Time

Outcome

        In this investigation there are many variables that will affect the terminal velocity of ball bearings as they pass through the five different liquids Glycerol, Teapol, Water, Motor oil and cooking oil. The variables are;

Temperature An increase in temperature decreases the viscosity of a fluid and therefore decreases the friction opposing the motion of the ball bearings. However, since the investigation takes place over a number of days, the temperature was monitored closely.

Friction due to the sides of the tube may also play a part if the vertical tube is narrow.  To minimize this, in the investigation, ball bearings were dropped from the center of the tube so that they were less likely to experience friction due to the sides of the tube.

Distance

...read more.

Middle

Safety Measures

        I will make sure me and my group will be careful when handling all equipment which includes all of the liquids. We must also be careful when handling all of the liquids.

I will make it a fair test by

        I will make it a fair test by repeating each experiment five times each to make sure my results are acurate and fair. We will have the same person to time the

...read more.

Conclusion

Apparatus – the experiment could be redesigned so that apparatus such as light gates could be used to provide an accurate method to obtain data for the speed of the ball bearings.

Throughout the experiment I monitored the temperature using a thermometer.  This was because temperature affects the viscosity of the glycerol and therefore the friction opposing the motion of the ball bearings.  

Variation of temperature – A thermometer measures to the nearest degree This meant variations in viscosity of the liquids within the tube and difficulty in maintaining a constant temperature when reached. 

Friction – Frictional forces acting from the sides of the tube may have had significant effect on the ball bearings by opposing their motion.  This may have produced anomalous results. To eliminate this in a future investigation, a much wider tube should be used.

Matthew Underwood 11 Lov

...read more.

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. An Investigation into the terminal velocity of steel ball bearings in Glycerol.

    The initial marker was placed five centimetres below the top of the glycerol, so that I had enough time to drop the ball and start the stopwatch. Before I began the actual experiment, I decided to do some trial runs, to see which size balls would be best to use.

  2. Bouncing Ball Experiment

    repeat 1 repeat 2 repeat 3 repeat 4 repeat 5 Average of all repeats Average of the middle three repeats 200 105 103 109 104 106 105.4 105.0 190 104 103 104 102 103 103.2 103.3 180 102 102 101 104 101 102.0 101.7 170 100 100 98 99

  1. The effect of the temperature on the viscosity of the syrup.

    Situate the beaker and stand it carefully at the centre of the stand, so that it does not slip away. Extra care should be taken when dealing with the beaker such preventing it from breaking. Table of results for Preliminary work Temperature Difference in density (sphere & syrup)

  2. Practical investigation into Viscosity in liquids (Stokes Law).

    Time taken(s) for ball bearing to pass through distance measured 1 2 3 Average 0-20 1.89 1.86 1.88 1.877 10-30. 1.83 1.77 1.80 1.800 20-40 1.76 1.75 1.78 1.763 30-50 1.76 1.79 1.77 1.773 40-60 1.77 1.78 1.77 1.773 Small Distance Timed (cm)

  1. Practical Investigation Into Viscosity

    986 cP Liquid air @ -192.3�C 0.173 cP Glycerin @ 20�C 1,490 cP Ether @ 20�C 0.233 cP Pancake syrup @ 20�C 2,500 cP Water @ 99�C 0.2848 cP Honey @ 20�C 10,000 cP Chloroform@ 20�C 0.58 cP Chocolate syrup @ 20�C 25,000 cP Methyl alcohol@ 20�C 0.597 cP Ketchup

  2. How does the temperature of a squash ball affects the impact time of the ...

    10-3s Uncertainty = 7. Temperature = 80.0+0.4 oC Trial 1 2 3 4 5 6 7 8 9 10 Mean Rebound height/cm 68 68.8 69.2 69.2 69.8 70.6 70.8 71.6 72.6 73.6 70.4 Impact time/0.001s 17 17 18 21

  1. Investigation into the effect of temperature on viscosity

    ?v = 2 r� ?steel g -2 r� ?fluid g and cancel common factors 9 ?v= 2 r� (? steel - ?fluid)g divide by 9v ?= 2 r� (? steel - ?fluid) g substitute v for s/t (v=s/t) 9v ? = 2 r2 (? steel - ?fluid) g 9 (s/t)

  2. Investigating the viscosity of liquids.

    This can be related to a real life situation, where a skydiver jumps off his plane. The theory of viscous drag can be used to explain 'air resistance'. When the skydiver first jumps off the plane, he will first accelerate due to a net downward force, where the weight of the skydiver being much greater than the upthrust.

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