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

# A2 Viscosity investigation

Extracts from this document...

Introduction

Investigation to determine the viscosity of golden syrup and the effect temperature has on this.

I will determine the viscosity of syrup at the following temperatures (10°C, 20°C and 30°C). I will be plotting my results on separate graphs to determine the viscosity and then plot them on the same graph to help determine the effect of temperature.

Apparatus:

Golden syrup

Measuring cylinder

5 ball bearings of varying sizes

Weighing scales

Stop clock

Micrometer

Nitre rule

Magnet (to get ball bearings out of syrup)

Thermometer

Water bath

For the density of steel I will use the accepted value of 7850kgm-3. To work out the density of golden syrup I will measure the weight of 50cm3 and use the formula ρ=  where m is mass and v is volume. I will do this for each temperature I temperature will affect the density.

Method:

1. Using the micrometer measure the diameter of the ball bearing.
2. Weigh the ball bearing using the weighing scales and record the results in a table.
3. Measure 6cm on the measuring cylinder and draw two lines draw the line all the way around the cylinder as this will make it easier to ensure you are at eye level. (ensure the

Middle r2ρsyrupg =6ηv. Then make V the subject, V= g (ρsteel-ρsyrup).On the graph plot r2 on the x-axis and v on the y axis which means the gradient=  steel-ρsyrup). Then rearrange this equation to make viscosity the subject η=  x  . So when the gradient is calculated you have an equation to use all the information to calculate the viscosity.

When this has been done for all temperatures one final graph will be plotted which will be used to compare all the viscosities at the various temperatures.

Results:

Density of syrup

 Temperature (°C) Mass(kg) Volume (m3) Density(kgm-3) 20 77.00x10 5x10 1540.0 30 78.50x10 5x10 1571.0 40 72.57x10 5x10 1451.4

20°C:

 Diameter (m) Radius2 (m2) Distance Travelled(m) Time taken (s) Average Velocity (ms-1) 1 2 3 899x10 203 x10 78 x10 46.65 45.57 42.57 17.4x10 +or-0.9x10 634x10 100x10 78 x10 58.10 67.09 59.48 12.7x10 +or-1.1x10 316x10 25.0 x10 78 x10 151.21 150.14 153.93 5.14x10 +or-0.07x10 199x10 9.90 x10 25 x10 97.57 96.17 96.92 2.58x10 +or-0.02x10 149x10 5.55 x10 25 x10 256.23 258.14 258.74 0.970x10 +or-0.006x10

Conclusion

Conclusion:

As far as I know I have discovered the viscosity of syrup which is what I set out to do. I have also seen how the temperature would affect this and as I thought and increase in temperature will lower the viscosity. This is due to the bonds in the syrup being weaker as there is more energy in the syrup due to more heat these weaker bonds allow the ball bearings to flow more freely through the syrup. The relatively high errors are due to the investigation being rather inaccurate due to the reasons discussed above.

This student written piece of work is one of many that can be found in our AS and A Level Electrical & Thermal Physics 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

# Related AS and A Level Electrical & Thermal Physics essays

1.  ## viscosity of golden syrup

4 star(s)

F=viscous drag (N) r=radius of sphere (m) ?=coefficient of viscosity (Ns/m2) V=velocity (m/s) Also, in an upwards direction is upthrust. This is calculated by the amount of the material displaced. As this is spherical (the ball bearing) this can be calculated by the formula W=mg.

2. ## The aim of my investigation is to determine the specific heat capacity of aluminium.

I was unable to use a more accurate thermometer, as these were the best in school. Thermometer, %error = 0.5 x 100 20 = 3% This is a slightly larger source of error and along with human error of measurement could result or is used to explain any inaccurate results.

1. ## PID Control Case Study - Balanced beam demonstration

Diag.5 - AN20 circuitry The 100KHz signal detected by the photodiode, is converted back to a low frequency signal, by a technique called 'synchronous demodulation' (Diag.6). By clocking the switched capacitor trans-impedance amplifier synchronously to the signal, and following with a sample and hold, the resultant output is affectively a rectified version of the input.

2. ## Measuring weight with a strain gauge.

= R1(1+y) and Rg = R1(1+x)(1+y), and Vo = VsRg/(Rg+R'g)-Vs/2 ? VsGe/4. This method also has drawbacks, though: that an unstrained specimen of the original material has to be provided and that the dummy gauge is not necessarily at the same temperature as the active one.

1. ## Magnetism Investigation

Combining Eqns. 1 and 3 for the case of parallel wires (theta = 90 degrees), the following result is obtained: mu * I * I' * L F = ----------------- (4) 2 * pi * d The forces exerted on the two conductors are equal in magnitude and oppositely directed, as required by Newton's Third Law.

2. ## Resistance Investigation

I hope to obtain approximately six 6 results in this experiment, to do this I intend to vary the voltage in 1volt steps up to 6 volts. I will increase the voltage using the voltmeter. To ensure that the experiment is as accurate as feasibly possible, I will obtain at

1. ## Resistance Investigation

The potential difference can also be given in terms of these energy changes in fact the volt is equal to the joules of energy per coulomb. So a battery supplying a potential difference of 4v gives 4 joules of energy to each coulomb of charge that passes through it.

2. ## Resistance Investigation

Some metals have less resistance than others. I n circuits, the connecting wires are usually made of copper because it has a low resistance. Resistors are specially designed to provide resistance. They are used in electronic circuits so that the right amount of current is fed to different parts to make them work properly. • Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to
improve your own work 