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

Investigation on how putting springs in series and parallel affects their extension.

Extracts from this document...


Gemma Hillidge                                                               G.C.S.E Physics Coursework

 Investigation on how putting springs in series and parallel affects their extension



In order to find out how putting springs in series of parallel affects the extension of the spring I will use Hooke’s law. Hooke’s law states that the force applied to a spring is proportional to its extension, so long as the limit of elasticity is not exceeded. This can be written Tα . This statement of proportionality can be used to write an equation of proportionality: T=k. k represents the spring constant or stiffness of the spring. To find out how the extension of the springs is affected by putting the springs in series or parallel I will set up an experiment involving putting weights on a single spring, two springs in parallel and two springs in series.

Single Spring       Two Springs in Series        Two Springs in Parallel



I researched this topic in the textbook “Advanced Physics by Keith Gibbs” and I found that the equation used to find the spring constant is

 k =image03.pngimage03.pngimage03.png

l        ,

which means the spring constant can be calculated by dividing the modulus of elasticity by the length of the spring. All springs have a different spring constant and the higher the spring constant, the lower the extension. Two springs put into series have a different spring constant than two springs in parallel.

...read more.



How I obtained my results

I obtained my results by measuring the extension of the springs after each 1N of force was added. I measured this distance in mm using a meter stick. I chose millimeters to be relevant precision as the starting length of the springs was only quite small. I used copper wire to attach the hook with the weights on to the bottom of the spring; this ensured that the weights were balanced properly. After I had added each extra weight to the springs, I gently lowered them down to prevent them from losing balance. I took a repeat set of results for each set of springs to ensure the reliability of my findings. I took readings of the extension of springs in parallel and a single spring when forces of 1,2,3,4,5,6 and 7 Newtons are applied to them but I only went up to 4N when applying force to two springs in series as they will have a lower limit of elasticity. If I were to exceed this limit any readings I took after the limit was exceeded would be inaccurate.

...read more.


Some further work I could do to prove my theory about springs in series and parallel would be measuring the extension of three or more springs in series or parallel. Or I could even investigate the limit of elasticity of springs in series and in parallel. If three springs in series extend three times as much as one single spring, and three springs in parallel extend a third as much as a single spring then this would support my findings in this investigation.

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Waves & Cosmology 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 Waves & Cosmology essays

  1. Peer reviewed

    What affects the voltage output of a solar panel?

    3 star(s)

    This is the background reading 9. Switch on the power pack and take the reading from the voltmeter. 10. Turn off the power pack and note down the voltage output without the ray box. This is the second background reading.

  2. The aim of this investigation is to examine the effect on the spring constant ...

    Instead it will return to a semi-stretched state. When being stretched, the properties that a material displays falls into 1 of 3 categories, it will be either: * Ductile The material has a period of uniform elastic stretching, then a period of non-uniform plastic stretching until breaking point is reached.

  1. Making sense of data - finding a value for the young modulus of a ...

    were hung on one end of the ruler was not hung at a fixed position which could have affected the value for the deflection. I used a screw gauge to measure the breadth and the vernier calipers, which I used to measure my depth of the ruler with.

  2. Physics - The aim of this practical investigation was to obtain a value for ...

    Table of Results Resolutions: Meter Rule �1mm, Masses �5% Mass (kg) � 5 % Force (N) � 5 % Extension (mm) �3mm Mean x (mm) 1 2 3 0.100 0.981 �0.049 90.0 93 89.5 89.0 86 89.5 �3.5 0.200 1.962 �0.098 223.0 226 222.0 221.0 218 222.0 �4.0 0.300 2.943

  1. An experiment to investigate and determine how rubber behaves when tension forces are applied ...

    First of all I will set up the apparatus as shown on the before page. The very second thing I will immediately have to do is measure the rubber band in cm.

  2. My aim in this experiment is to find out how force affects the extension ...

    My graph shows a line of best fit that is straight. This means that the load and the extension are directly proportional. Anomalous results in my preliminary could be because I did not measure the reading on the ruler exactly; instead I measured it approximately to every 5mm.

  1. Investigation into the elasticity of a set of springs under differing conditions.

    The definition of Hookes law is as follows: An object obeys Hookes Law if the extension produced in it is proportional to the load. I expect that the spring stiffness (k) will change depending on the arrangements of the springs i.e.

  2. We are aiming to investigate the effect of force upon a spring. We will ...

    We will measure the spring with the ruler to gain a starting point. Then we will attach a 1 Newton weight (hanger) to the spring, and measure the extension of the spring on the ruler. Once we subtract the starting point we will have a measurement for the extension of the spring.

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