The Factors Affecting the Deflection of a Spaghetti Bridge
An Investigation into the Factors Affecting the Deflection of a
Spaghetti Bridge - Planning
* Preliminary Work
I have decided to investigate how different masses affect the
deflection of a spaghetti bridge. We have been given a selection of
different types of spaghetti. To find the type that will give me the
largest range of results I need to test each type to find the one with
the largest breaking force.
To do this I held the spaghetti in two clamp stands (one at each end
of the strand) and then applied a mass to the centre of the spaghetti.
Starting at 10g and increasing the mass by 10g each time. Each type of
spaghetti was cut to the same length of 20cm. I found that the
"Waitrose Italian Spaghetti" had the largest breaking force of
approximately 90g.
I predict that the deflection of the spaghetti bridge will increase
proportionally to the mass applied. I believe this because spaghetti
is an elastic material (it will return to its original shape when a
force is applied) and Hooke's law states that for elastic substances
the extension (deflection) is directly proportional to the stretching
force (mass applied). However, all materials have an elastic limit
(when too much mass is applied then it will no longer return to its
original shape) and will break. If the elastic limit is exceeded then
the deflection in no longer proportional to the mass applied.
* Investigation
* Hold a piece of Waitrose Italian Spaghetti in two clamp stands.
Position them so the distance between the place where the spaghetti is
attached is 20cm.
* Find the mid point ...
... middle of paper ...
... future I would attach
the mass to the spaghetti using cotton thread tied tightly so it would
not move.
To improve the experiment I would find a more accurate way of
measuring the deflection. Since using a millimetre marked ruler was
cumbersome and the spaghetti was more than 1mm thick therefore it was
difficult to decide where to measure the deflection from. I would also
find a way of preventing the ruler and hanging mass from interfering
with each other since they got in each others way during the
investigation.
Additional work, which could be carried out, is to repeat the
experiment using, a wider range of lengths of spaghetti. The
investigation could also be extended to investigate other factors
affecting the deflection such as number of strands of spaghetti,
thickness of spaghetti or type of spaghetti.
The Bailey Island Bridge is located in Harpswell, Maine on Route 24. Before the making of the bridge, the fishermen that lived on Bailey’s Island wanted a bridge that connected their island to Orr’s Island. The town of Harpsweell made and voted on their decisions in the weekly town meetings (“Bailey”). The project was stalled because of some of the mainlanders in the town, but it was brought back up for discussion in 1912. They first agreed on a “road” which would connect the two islands and would be constructed with timber. This was to cost $3,000. The cost quickly reached $25,000 at a later town meting because they decided to build the bridge with stone and concrete instead. Once the legislature decided to pass a bill stating that it would fun state’s highway and bridge projects, they decided to move forward with the project (Hansen, 36).
10. Then wrap the ponytail into a really tight bun and secure with a rubber band. (See Figure 1.9)
BRONX- 25 year old man is found dead after driving off the Bronx Neck Bridge with his girlfriend in the trunk of his car at around 2:00am.
The Jericho Covered Bridge in Kingsville, Maryland was built in 1865 and restored in 1982. The bridge is 100 feet long and cased in cedar planks and timber beams. Legend has it that after the Civil War many lynchings occurred on the bridge. Passersby were supposedly captured on the bridge and hung from the upper rafters. The bridge is very close to my house and I have driven over it several times. The storyteller, age 19, also lives a couple minutes away from the bridge. He has lived in Kingsville, Maryland his entire life. He recalled a dramatic story he had heard from his older brother involving the haunted bridge.
The 1890 story “An Occurrence at Owl Creek Bridge” by Ambrose Bierce was composed with a structure that shows time fluidity. The story illustrated the perceived function of time as beyond reality as it slows down to the satisfaction of the delusions of protagonist, Peyton Farquhar, as he experiences a dying incident on the day of his execution. Farquhar was charged with the crime of an attempted act to destroy or sabotage the Owl Creek Bridge, and was thereafter sentenced to death by the Federal Army. Farquhar believes as he also leads the readers the same that he has escaped execution and has made his way back home. The dying protagonist’s experience was portrayed in a slow flow of time that seemed to exactly fit the many circumstances that occurred just in time for reality to come and take its place in time.
Staten Island is a part of New York as well. Since it was dispatched from the main New York City, in the 1950s there were only 3% of the entire New York City population living there. Even though it occupies 16% of New York City’s land mass, there was little people in Staten Island relative to the mainland city. Furthermore, there was no link to the mainland resulting in a lack of urban development in the island as transportation facilities are weak and not efficient. Therefore it served as a residential suburb. In 1964 a direct surface link was introduced in the form of the Verrazano- Narrows Bridge. Approximated travel time from Staten Island to the Mayor’s Office became 30 minutes. Since travel time
test. I will test these using a given data set. If I need to take more
“An Occurrence at Owl Creek Bridge”, to me was about a man swindled into being killed. Before you die, your whole life flashes before your eyes. But for this man, it was not his life, but what could’ve happened instead of him dying being played out in his mind. Peyton Farquhar was a slave owner from Alabama that highly supported the south.
The Tacoma Narrows Bridge, was also known as the Galloping Gertie, was one of the most famous cause study of structure failure in the world. The idea for constructuring of the bridge came up in the date back to 1889 with a Northern Pacific Railway proposal for a trestle. Then after a few yerars of concreted and construction with the cost of over 6,400,000 dallors, the bridge was been build and became the third longest and the most flexible suspension bridge in the world of its time of 1900s with a toatl length of 1810m. It was designed as a twin suspension bridge which located between Tacoma and the Kitsap Peninsula in United States. The Tacoma Narrows Bridge opened for traffic on July 1, 1940. After being in service for 129 days, unfortunately, the failure occurred at the late morning of Novermber 7, 1940 under a high wind condition. Then a new bridge was build as replacement which opened on 1950 and still remained today as the westbound lanes of the present-day twin bridge complex.
People who thinks of Thornton Wilder primarily in terms of his classic novella “Our Town,” The Bridge of San Luis Rey will seem like quite a switch. For one thing, he has switched countries; instead of middle America, he deals here with Peru. He has switched eras, moving from the twentieth century back to the eighteenth. He has also dealt with a much broader society than he did in “Our Town,” representing the lower classes and the aristocracy with equal ease. But despite these differences, his theme is much the same; life is short, our expectations can be snuffed out with the snap of a finger, and in the end all that remains of us is those we have loved.
Roll out the ball and with your thumb gently press the soil out over your foreigner to make a hanging ribbon
Step 4:Make sure the person holds the clothespin between their thumb and index finger and squeeze until the two ends meet.
...y, the strongest in fact, it helps to simplify the results of the test to think of it as a type.
tether. Until recently, there was no material known to man that could handle the stresses involved. With
I will use a clamp to fix a ramp on to a retort stand, from which I