The Extension of an Elastic Band
Aim & Hypothesis
I anticipate that an increase in the load on the elastic band will
result in an increase in the extension of it. I think that the
extension will be proportional to the load on the elastic band. I
think that there will be a certain amount or energy lost and that this
will increase proportionally as the load increase. This will be lost
due to heat energy.
Safety
RISK ASSESSMENT - LEVEL ONE
This experiment does not carry many hazards. Bags and coats will be
moved out of the way to ensure that no one will trip over them. Whilst
loading the elastic band care will be taken to make sure that the
elastic band is loading carefully to try and ensure it does not snap.
However I will be wearing satfey glasses to prevent injuries to my
eyes if the band does snap. I will use some kg masses to stop the
retort stand sliding of the desk.
Variables
Independent Variable: Load (kg) the masses which I am applying to the
elastic band.
Dependent Variable: Extension (m) to the elastic band
I have used the same equipment throughout the experiment (including
the same elastic band) to ensure that the experiment is as fair as
possible.
Diagram
Method
The apparatus was set up as shown on the previous page. I measured the
'extension' of the elastic band when it was not loaded. Then I loaded
the elastic band with the masses, increasing in 100g intervals each
time. I allowed the elastic band to stretch and stay in position for
60 seconds before taking a reading. To ensure that my measurements
were as accurate as possible I used a meter ruler which was clamped
onto the retort stand so that the elastic band hung next to it. I
could then measure the extension using a set square flat against the
end of the ruler to read of the measurements. After I had put on all
cliff and catch the kids who were about to fall off. This meant that if someone was about
... measure. They will not want the hassle of remembering two different measurements throughout their lives. Americans are not very stubborn and are willing enough to change to a simpler system of measurements.
on to his feet, jumped down to the beach, knelt and swept a double armful of sand into a
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toward the bridge, passing the bodies of crewmen as they slipped in the blood that covered the floor. They burst through the door of the bridge with their knives drawn.
Hesitating, I glanced over my trembling shoulder to see my four other mates squatting behind a near-by bush. When they saw me gazing, all they did was usher me forward and give silly thumbs up of what seemed to be useless encouragements. They were there to, supposedly, act as my witnesses.
walking off as if nothing just happened right in front of them. No one walks over to the man to
Today, millions of people have discovered the benefits of stretching. Over the last years, studies have shown that people that live these active lives live fuller lives. In fact, studies show that a lack of physical activity directly relates to many major illnesses and death. Before the Industrial Revolution, people actually had to work hard to get their needed amount of movement. After the Revolution, it became a different story. People no longer needed to work physically to make a life for themselves. With this lack of movement came lack of flexibility. Now, everywhere you look, you see people out jogging, hiking, and playing golf, tennis, and other sports to stay active. The fitness trend is in; but it’s not a trend anymore. Now, it’s a way of life. Stretching is an important part of this way of life that many people leave out.
with work to do, and as soon as they enter the door, they sit in front