Wooot!! FInished the SRP 2 days ago. Anyways thought it would be fitting to say a last goodbye to the SRP!!
R.I.P SRP
*THanks for reading this blog*
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17 June, 2010
15 June, 2010
hi again
yo, finished my discussion :D very happy...doesn't mean other stuff though...:(
WOw, i just realised, i broke 90 rubber bands doing these experiments! Worth it though.
WOw, i just realised, i broke 90 rubber bands doing these experiments! Worth it though.
14 June, 2010
Sunday/ Monday
Hi again, this is an update on my progress. Have just completed the method and results, nah actually did that yesterday. Today, i started the discussion and drew a graph...ENJOY!
12 June, 2010
Progress
Yay! Today i have completed the introduction of the report, took pretty much all day but at least it's done. However, i think it's a little too long but it should fit i hope!!!
09 June, 2010
Start already...
Time goes by so fast when you're having fun right? Hmm, need help on citing, is gunna be pretty bothersome citing every line...that is what you do right? Sigh...
Nways, time to borrow boooks!
Nways, time to borrow boooks!
03 June, 2010
Oh no...
I've rechecked my last results and i have made a terrible mistake! Luckily it's correctable and it doesn't mean i have to entirely do my experiment again. It turns out that my calculation of the total of the 'AT ROOM TEMPERATURE 20-C' column was incorrect, thus affecting the average and the Newtons.
The average of Newtons should have been 32.86 N as opposed to 28.922 N.
Here is the redone first table of results:
Sorry for the inconvieniance :(
The average of Newtons should have been 32.86 N as opposed to 28.922 N.
Here is the redone first table of results:
Sorry for the inconvieniance :(
2nd time round
Hi! I've been winding down since the last blog submission but 'BAM!' theres more! So i have decided to do the experiment once again in much the same way as last time. Here are the results:
11 May, 2010
Aim and hypothesis
Not really sure if this is necessary because last time i heard it was just the method required...
anyways, here it is (By the way, this is meant to go before my method shown in previous posts)
Aim: To investigate whether temperature will have an effect on the load a rubber band can carry before rupture.
Hypothesis: Rubber bands heated above room temperature will be more elastic than rubber bands heated at or below room temperature.
For variables, see the post somewhere down there :)
anyways, here it is (By the way, this is meant to go before my method shown in previous posts)
Aim: To investigate whether temperature will have an effect on the load a rubber band can carry before rupture.
Hypothesis: Rubber bands heated above room temperature will be more elastic than rubber bands heated at or below room temperature.
For variables, see the post somewhere down there :)
28 April, 2010
Results
Hi again, i recently did my experiment on the weekend. I realise the hand looks freaky but i cut myself out of the picture... also, the method was used from the previous post.
Needless to say, i wore quite a lot of protective gear (long sleeved jumper, safety goggles) because it was pretty scary about putting your face and hands so close to a 'to-be-ruptured' rubber band. We all know it hurts. I didn't wear gloves though as it may interfere with the accuracy of the experiment.
Here are the results:
NB: Sorry you have to squint
All the measurements taken above are read and done by hand. The average is converted from kilograms to Newtons by using a formula: kilograms*9.8m/s/s= Newtons.
Needless to say, i wore quite a lot of protective gear (long sleeved jumper, safety goggles) because it was pretty scary about putting your face and hands so close to a 'to-be-ruptured' rubber band. We all know it hurts. I didn't wear gloves though as it may interfere with the accuracy of the experiment.
Here are the results:NB: Sorry you have to squint
All the measurements taken above are read and done by hand. The average is converted from kilograms to Newtons by using a formula: kilograms*9.8m/s/s= Newtons.
21 April, 2010
13 April, 2010
More about the experiment
Hopefully by detailing the wording of the experiment, my experiment will be easier to understand.
'DOES TEMPERATURE AFFECT THE FORCE A RUBBER BAND CAN WITHSTAND BEFORE RUPTURE?'
Temperature is defined as the hotness or coldness of a body or environment. Temperature can be meausred using either Celcius, Fahrenheit of the Kelvin Scale. In my experiment, i'll be using (degrees) Celcius.
Elasticity is the tendancy of a material to return to its original shape after a load has been exerted on it. In my experiment however, i will be meausuring the load the rubber band can take before rupture by using a spring scale a.k.a. Newton Meter.
Sourced: wordnetweb.princeton.edu/perl/webwn, elasticity, Date accessed[11 April, 2010]
A spring scale measures the tension force applied to the object. Ultimately, a spring scale and a newton meter is the same thing; the spring scale meausures in kilograms (kg), whilst a newton meter measures in Newtons (N). If you multiply kilograms by 9.8m/s/s (metres squared and acceleration due to gravity) it will convert the amount of kilograms to Newtons.
'DOES TEMPERATURE AFFECT THE FORCE A RUBBER BAND CAN WITHSTAND BEFORE RUPTURE?'
Temperature is defined as the hotness or coldness of a body or environment. Temperature can be meausred using either Celcius, Fahrenheit of the Kelvin Scale. In my experiment, i'll be using (degrees) Celcius.
Elasticity is the tendancy of a material to return to its original shape after a load has been exerted on it. In my experiment however, i will be meausuring the load the rubber band can take before rupture by using a spring scale a.k.a. Newton Meter.
Sourced: wordnetweb.princeton.edu/perl/webwn, elasticity, Date accessed[11 April, 2010]
A spring scale measures the tension force applied to the object. Ultimately, a spring scale and a newton meter is the same thing; the spring scale meausures in kilograms (kg), whilst a newton meter measures in Newtons (N). If you multiply kilograms by 9.8m/s/s (metres squared and acceleration due to gravity) it will convert the amount of kilograms to Newtons.
Long awaited method
This is the 'refined' method which will hopefully meet all the requirements...
* During the research, I found that rubber bands were classified with a size number according to the thickness, length and width of the rubber band. In my experiment, I will be using size 16 rubber bands.
* During the research, I found that rubber bands were classified with a size number according to the thickness, length and width of the rubber band. In my experiment, I will be using size 16 rubber bands.
Equipment
Picture 1- Size 16 Rubber bands
Picture 2- Safety goggles
Picture 2- Safety goggles
Picture 3- Spring balance hanging from hook
- 1 pack Esselte Superior Rubber Bands- Size Number 16x 45*
- Safety goggles
- gloves(optional)
- Oven
- Freezer
- Spring scale
Method (2):
1) Put on safety goggles and gloves.
2) Hang a spring scale from a secure hook as shown in picture 3.
3) Take 45x Size No.16 Rubber bands and sort them into 3 piles of 15 rubber bands each.
4) Place the first group of 15x rubber bands in the freezer at 0 degrees Celcius for 2 hours.
5) Take the rubber bands out of the freezer and immediately place a frozen rubber band onto the spring scale as shown in picture 3. Pull downwards on the rubber band.
6) Record the measurement on the scale (amount of grams exerted on the rubber band) just before the rubber band ruptures.
7) Repeat steps 3)-6), instead using the second group of 15x rubber bands at room temperature (20 degrees Celcius)left for 2 hours.
8) Repeat steps 3)-6)instead using the third group of 15x rubber bands heated in an oven at 70 degrees Celcius for 2 hours.
8) Record and tabulate results.
09 April, 2010
How can this experiment help?
By being able to come to a conclusion about whether or not a rubber band's elasticity/ strength/ durability is affected by temperature, rubber can be maufactured according to this finding in a way that is perhaps more sustainable to the environment and to consumers.
Understanding the relationship between various substances e.g. rubber and sulfur, may provide building blocks to producing one artificial type of rubber capable of being used for a range of purposes (there are a lot of types of rubber now, sorted according to use), thus cutting down cost and need for resources to manufacture the current types of rubber.
ALthough it seems as if rubber has already come so far and there is no need or chance that rubber's properties can be further refined, rubber still has the potential to further develop. Rubber can be found almost anywhere, at home, on a plane, in your shoes...
Who knows what rubber will be used for in the future?
Source:
- Middendorf, W.H. (1981), What every Engineer should know about Inventing, Marcel Dekker, New York.
Understanding the relationship between various substances e.g. rubber and sulfur, may provide building blocks to producing one artificial type of rubber capable of being used for a range of purposes (there are a lot of types of rubber now, sorted according to use), thus cutting down cost and need for resources to manufacture the current types of rubber.
ALthough it seems as if rubber has already come so far and there is no need or chance that rubber's properties can be further refined, rubber still has the potential to further develop. Rubber can be found almost anywhere, at home, on a plane, in your shoes...
Who knows what rubber will be used for in the future?
Source:
- Middendorf, W.H. (1981), What every Engineer should know about Inventing, Marcel Dekker, New York.
Some uses of rubber bands
Some may be obvious, some not so obvious...
- Braces elastics (helps manoevure teeth to fit the jawline):
pretty yuck...
- Hair elastics (elastics found in hairpieces):
- Pants (Need more room? Just loop a rubber band through a hole in your pants and fasten it to a button)
- Car tyres (ok, they don't have rubber bands in them, but they have rubber..:D)
- Newspapers, tying flowers in bunches:
- and much, much more...
- Braces elastics (helps manoevure teeth to fit the jawline):
pretty yuck...
- Hair elastics (elastics found in hairpieces):
- Pants (Need more room? Just loop a rubber band through a hole in your pants and fasten it to a button)
- Car tyres (ok, they don't have rubber bands in them, but they have rubber..:D)
- Newspapers, tying flowers in bunches:
- and much, much more...
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