• 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...


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









        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.


...read more.


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.


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

    In order to eliminate this error in the final experiment, I will use a magnet so that the sphere will remain attracted to the it throughout the process of removing it. In order to do this I will be holding the magnet on the outside of the measuring cylinder.

  2. Viscosity - Comparing the viscosities of different liquids.

    = F / (6 ? r v) = 0.14368 /(6 ? x 0.005 x 0.49) = 3.11 Conclusion The table below shows coefficients of viscosity of the three liquids used in the experiment: Liquid Coefficient of viscosity (in N s m-2)

  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

    99 99.2 99.3 160 95 96 95 97 94 95.4 95.3 150 91 90 89 93 90 90.6 90.3 140 82 85 86 86 84 84.6 85.0 130 81 82 81 79 81 80.8 81.0 120 76 77 75 77 78 76.6 76.7 110 72 77 73 72 72 73.2

  1. Investigation into the effect of temperature on viscosity

    Velocity was measured at three temperatures, the first temperature used was room temperature. Marks were made at 8cm intervals down the tube one from the top and two below. The time taken to pass through each section was recorded and repeated three times.

  2. Measuring the Viscosity of Honey

    measuring once it reaches 5 cm, the measurement should be taken by using the 4 stop clock, each at the corresponding distance once the ball-bearing becomes perpendicular to the viewer's eye, to provide accuracy; then those measurements should be recorded in a table.

  1. Squash Ball and Temperature Investigation

    Now that the general physics behind a bouncing ball can be understood, I can begin to explain my prediction of increasing the temperate of a ball and how this will affect its bounce. A theory, which links into this prediction, is the Kinetic Theory.

  2. Practical Investigation Into Viscosity

    69.3 cP Air @ 18�C 0.018 2 cP Olive oil @ 20�C 84.0 cP Argon @ 20�C 0.022 17 cP Light machine oil @ 20�C 102 cP Air @ 229�C 0.026 38 cP Heavy machine oil @ 20�C 233 cP Neon @ 20�C 0.031 11 cP Caster oil @ 20�C

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