Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
explain why the trolley accelerates
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: explain why the trolley accelerates
Investigation of Energy Stored in a Spring
Aim:- To investigate how the velocity of a trolley when different
spring compressions are used.
For this piece of coursework I am going to investigate how the
velocity of the trolley over a set distance, is proportional to the
compression of the spring.
I plan to use two different methods of carrying out the investigation.
These methods are :-
A Light Gate : - The trolley had a piece of card attached to it, on
the top.the spring of the trolley was then compressed and then
released, as irt passes through the light gate. The light gate is a
piece of equipment which is connected to a computer, and as the
trolley passes through the light gate, a light beam is broken, and the
time it has taken for the length of card to pass through is then
recorded.
Computer Simulation : - this is a computer program which allows you to
do exactly the same experiment as done in the light gate method..
however, it is a faster and much easier way to collect the data, and
the results are a lot clearer. You can alter the length of the card,
the compression of the spring and the distance that the trolley
travels.
To make this test a fair one, when the light gate is used, we will
keep the same trolley with the same spring throughout the whole
experiment. The only variable that we will change at any time during
the experiment is the compression of the spring, this is for obvious
reasons. For example, on the computer simulation, the weight of the
trolley will be kept the same. 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
3 "DoverLock and Key of the Kingdom." The Golden Arrow. http://www.dover-kent.co.uk/transport/golden_arrow.htm (accessed April 10, 2014).
I will have to be careful to keep my experiment fair. To make sure I
Qurine, Leonard. "The Cards indicate a voyage on a streetcar named desire." Modern Critical interpretation. (1988): 61-78. Print.
The basic trolley problem is as follows. A trolley is moving down a track towards a fork in the track. On one side of the fork, there are five people tied up. On the other side of the fork, there is one person tied up. Without intervention, the trolley will go down the first side of the fork, killing five people, but there is a lever that can be pulled to divert the trolley down the second fork, killing only one
Factors Affecting the Time Period for Oscillations in a Mass-spring System. When a mass is attached to the end of a spring the downward force mass applied to the spring will cause the spring to extend. We know from Hooke's law that the force exerted by the masses attached to the spring will be proportional to the amount the spring extends. F = kx
MacKenzie, John M. and Richards, Jeffrey. The Railway Station, A Social History. Oxford University Press, Oxford. 1986.
To this day the Golden Gate has been a magnificent symbol and heralded as a substantial accomplishment. It has withstood the length of time and the numerous concerns such as wind, fog, earthquakes, and deformation of the bridge. The bridge has served as a respectable example for engineering, because only a few problems had to be resolved such as traffic flow and reducing the weight once. It has assisted over 1,970,400,000 vehicles cross the Golden Gate Strait, and shown itself to the world in being a worthy social, scientific, and symbolic example.
In Silent Spring, Rachel Carson seeks to persuade the readers to open their eyes to a serious problem: the careless spraying of poison. Her purpose in writing the book is to protect plants, animals, and humans from poisons that never had to be sprayed. Carson uses invective, the ad hominem argument, and punctuation to attack the people responsible for the sprayings and yield an emotional reaction from the reader. Through the use of those strategies, her argument becomes stronger and more effective at revealing the horrors of species control.
· The cross - has to be the same amount to be a fair test, if the
Fair test: To make this experiment a fair test, I will set out a table
To make it a fair test I will use the same apparatus every time and
Fair test (how): I made this a fair test by only changing one thing in
To make this experiment a fair test I am going to use the exact same
Investigating the Oscillations of a Mass on a Spring Aim: To be able to In this physics coursework, I'm here to investigate the oscillations. of a mass of spring. In this investigation, the oscillation means. the wave moving with periodic regularity. In this investigation, I can.
Traffic signals have a very long history. Evidence shows that in the 230 B.C. of ancient Rome, milestones were used to give pedestrians directions. The first device that somewhat resembled today’s traffic signals was called a semaphore, which stood roughly 22 feet tall and had two arms—when the arms were placed at a horizontal position that signaled “stop” and when they were switched to 45 degrees that meant “move with caution.” The first semaphore was manually operated and was installed in 1868 at the intersection of George and Bridge Streets in London (Mueller, 1970; Bullock & Urbanik, 2000). Later, gas lights were added to semaphores and that allowed them to be used at night. People had high hopes for these innovative devices, but in 1872 Parliament suddenly removed all of them. There were two main reasons for their removal. First, a terrible incident of gas explosion on a semaphore happened in 1872 that injured two police officers and killed the third. The second reason was that semaphores were expensive to manufacture. Although engineers worked quickly to modify the design to make them safer and cheaper, they were not widely adopted until the rise of automobiles (Mueller, 1970).