• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4

# The Bouncing Spring.

Extracts from this document...

Introduction

The Bouncing Spring

Introduction

Imagine someone doing a bungee jump or someone bouncing on a trampoline and think what is it that keeps pulling them down and not letting them fly off, Gravity the most important force on Earth. What if we didn’t have gravity, everyone would be jumping through the air, and people would take more than just one second to fall. Gravity helps objects fall and even if they intend to rise again due to a gain of energy such as elastic, that energy is converted into gravitational energy and this process keeps on going until gravity starts to become more powerful than the energy provided to keep the object up.

My aim of this piece of coursework is to find out about the relationships between springs, gravity and weight.  I must use as much scientific evidence as possible to prove whatever variables may occur.

Here are some variables for me to consider:

1. Counting the number of bounces and recording the times along with different weights.
2. Timing different number of bounces, using only the same amounts of weights.
3. Using longer springs and different weights and timing a fixed number of bounces for each trial.

Out of these three variables, I wish to choose the first due to that it seems to give out a bigger variety of results and as well as that, should be more interesting to do with the increase of weights per trial.

Planning

Equipment

1 x crane

1 x spring

Middle

If the spring I am using seems to look a bit overstretched, I will immediately use a new spring due to that the overstretched spring would let the weights take longer to bounce, causing an unfair test.Another important variable I must take into consideration is the bounces and that I have to be accurate in counting them or otherwise the time could increase or decrease so I’ve decided to count the bounce just before the weight/s spring/s back up.

My prediction

I predict that the more weights used, the longer it will take bounce because in my general terms the stronger the weight with the more energy, the more gravitational energy produced (converted from the elastic energy) and this will convert back to the original energy and at first, the weight will use a great deal of gravitational energy, the weights will drop deeper and will take longer to cause one bounce.

I searched on the internet for a scientific prediction and came up with Hooke’s Law and it came up with that the spring has a certain stretching limit/elastic limit which can be obtained by using lots of weights or leaving weights in a still position on the spring.

Preliminary Work

I did a practice practical before I’m going to the main one to see whether the results are suitable enough to proceed onto the main practical.

Conclusion

My prediction has been proved (the more weight, the longer it takes to break) and from looking at the graph, I can see that the time rising after every weight from 100g-500g.

Evaluation

Overall, I think the results seemed to be quite exact to my predictions and also I proved my prediction by using Hooke’s Law. When I plotted the averages on the graph, all the the data seemed to be quite reasonable except for the 200g data and it seemed that it wasn’t as close to the line of best fit in comparison to all the other data. Maybe if I did a retest I might’ve made new and better results or maybe even worse results.

One reason why I obtained poor evidence such as the 200g test was possibly because the weights didn’t bounce straight and seemed to swing in the form of a pendulum; also with the heavy amounts of weights on the spring, they intended to hit the table which possible quickened the time but I noticed this on the preliminary work so I took precautions and made the weights bounce off the table and ended up doing fine. Maybe if I used the same method with all the other weights my results could’ve been better but in my own opinion I doubt it because firstly gravity is the same no matter how high or how low you are and secondly the lighter weights didn’t hit the table, not causing an unfair test.

My conclusion seemed to be quite straight with no strange readings

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

# Related AS and A Level Waves & Cosmology essays

1. ## To use rubber bands to produce an accurate and reliable spring balance to weigh ...

Higher values represent stronger, less stretchy bands, and lower values represent weaker easier to stretch bands. The only limitation to Hookes Law comes if you stretch the band beyond its elastic limit or, in other words, when you stretch the band so far it permanently deforms.

2. ## Determine the value of 'g', where 'g' is the acceleration due to gravity.

This will also reemphasise the accuracy of the experiment. THE EXPERIMENT IS GOING TO BE REPEATED 3 TIMES TO OBTAIN THE AVERAGE VALUE OF GRAVITY. Results Experiment 1 Mass (kg) Length of the spring (m) Extension (m) Time for 10 oscillation (s) Time period (s) (Time period)2 (s2) 0 0.021 0 0 0 0 0.050 0.031 0.010 2.65 0.265

1. ## The Stiffness Of Springs

+ III + IV 101 9.90 I + II + III + IV 130 7.69 The trend in this system is that as more springs are included in the system the spring constant decreases. This is clearly shown in the graph.

2. ## An Experiment To Examine the Effect of Springs In Parallel

The forces between molecules are electrical because within each molecule are positive and negative charges so therefore forces become attraction and repulsion. I would say that a spring is difficult to pull apart because there are strong attracting forces holding particles together.

1. ## Dark Matter

And with Galileo Galilee's invention of the telescope, it was proven that Copernicus' theory was valid. Johannes Kepler and the Planetary Motions Johannes Kepler was an assistant of Tycho Brahe. Brahe had been recording his observation from the stars in the sky and Kepler had been wise enough to examine these observations.

2. ## Study the interference of light using Helium - Neon Diode Laser.

An approximate value of the wavelength of red or blue light can be found by placing a Perspex rule R in front of the eyepiece and moving it until the graduations are clearly seen, Figure 19.8. the average distance, x between the fringes is then measured on R.

1. ## Physics Coursework - Spring Investifation

Also we will make sure that the measurements arte accurate when using both methods. Equipment used Throughout the Experiment Light Gate : - 700 gram trolley with spring 10cm x 10cm card Computer Harvis Data Interface Insight Computer Software Light Gate Floor space for trolley to run along Ruler Computer

2. ## Waves and Cosmology - AQA GCE Physics Revision Notes

The allowed energy levels become closer together as the electrons moves to higher energies. These are the excited states that the electron can occupy. These energy are usually given in electron-vole (eV) * Ground state of the electron in a hydrogen atom is -13.6 eV, which is (-13.6 x 1.6 x 10-19)

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