Introduction
In 1687, Newton put forward the Newton's Second Law of Motion-Force and Acceleration in the book “Philosophiae Naturalis Principia Mathematica”. According to Newton’s second law, , this is integrated over position from an initial position (i) to a final position (f). (Wang,1)
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Therefore, we can get the work-energy theorem,
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W is the work done by the net force on the object, which equals to the change in kinetic energy according to the equation. We can get the formula:
Work-energy theorem, which based on Newton’s second law, plays an important role in studying problems concerning energy and work. Though we learnt this theorem in lectures, we still hope to validate the work-energy theorem in a laboratory setting.
Methods
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The linear velocity vs position curve was created with Program Capstone.
Discussion
For the first part of the experiment, the percentage error ranges from 34.9% to 46.4%. The source of the error comes from the friction between the glider and the air track. When the glider moved, the friction exerted a negative force on it. So the net force exerted on the glider was smaller than the force from the spring bands. Also, when the glider moved, the string on spring bands also had kinetic energy. And air friction could affect the results as well.
For the second part of the experiment, the percentage error ranges from 8.9% to 13.6% in the first four trials, which was acceptable. However, in the fifth trial, the percentage error was 48.7%. The friction was a source of the error. Also, the mass of the string should be taken into consideration. And in the fifth experiment, the change in position was too small and increased accidental chance.
To improve our experiment, oil can be used to decrease the friction between the glider and air track, also decrease the friction between the string and pulley. Besides, we can measure the mass of the string and calculate the change in kinetic and potential energy of the
Calculation: Initial Mass(g)-Final Mass (g)=Change in Mass (g) Trial 1 74.5-62.0=12.5(g) Trial 2 272.7-271.5=1.2(g) Percent Error: 272.7-271.5 x 100 272.7 =0.440% Percent Change: 74.5-62.0 x 100 74.5 (Trial 1) =16.778% 272.7-271.5 x 100 272.7 (Trial 2) =0.440%
This was made to gather and testing ideas. Another famous scientist named Isaac Newton, discovered the three laws of motion. The 1st law deals with “an object at rest tends to stay at rest, and an object in motion tends to stay in motion, with the same direction and speed.” (studios). “The 2nd law of motion deal with the second law says that the acceleration of an object produced by a net (total) applied force is directly related to the magnitude of the force.”
This was then tested against adding more weight in the second table, which increased the acceleration due to gravity, which made the second table faster than the third. While the third table went the slowest, because of the added weight on the cart which pulls back against the weight end more than tables on and two. This whole process in finding a_calculated would be the same as finding F=ma. Which makes this lab fully about testing Newton’s 2nd law and then checking out findings with percent
For this experiment, I used the online Mass & Springs PhET simulator to perform the experiment. First, I positioned the ruler so that 0 was on the line at which the end of the spring was at rest. Then, I put a 50g weight on the end of the spring and let the spring come to rest. After that, I pulled the spring down 10cm and released. I recorded the point at which the spring’s rebound stopped.
Student Name¬¬_________________ Newton’s Third Law Use what you learned from the Force Plates investigation, and from the reading, to answer the following questions. 1. Before you started the Force Plates investigation, two strings were attached to a spring scale. Recall that a mass of 250 grams pulled on each side of the spring scale.
The lab testing consists of investigating the rate of oxidation of Acid Sulfate Soils with variant temperatures. Since the transformation from PASS to AASS involves a significant pH drop to approximately one, rate of reaction and time was measured until the pH levels in the reaction even out at a low pH of approximately one. Appendix A & B demonstrate the oxidation reaction trials for each temperature over time, with pH levels recorded once every second. The time when the data stopped recording was determined when either the reaction had finished, or the time exceeds twelve minutes. This time limit was set due to a constricted time allowance of experiments.
Catapult Project Sketch - Question - How does building a catapult allow us to better comprehend 2 dimensional motion in physics? Hypothesis - I believe my catapult will fulfill its purpose, but not launch as far I’d hope, since it is my first time making one. Background information - During the Middle Ages catapults served as important weapons; but not just any catapult one, with the trebuchet design.
In this lab there were five different stations. For the first station we had to determine an unknown mass and the percent difference. To find the unknown mass we set up the equation Fleft*dleft = Fright*dright. We then substituted in the values (26.05 N * 41cm = 34cm * x N) and solved for Fright to get (320.5g). To determine the percent difference we used the formula Abs[((Value 1 - Value 2) / average of 1 & 2) * 100], substituted the values (Abs[((320.5 - 315.8) /
The Enlightenment was a philosophical movement which leaded the world’s ideas in Europe in the 18th century and mobilized by varies group of philosophes. Numerous ideas of the French and American Revolutions originated from the Enlightenment. The movement was pivotal in developing every aspect of the modern world, most particularly in terms of natural laws, politics and government. Without the central ideas of the Enlightenment, our world would have been different. The following paragraphs will discuss the influences of the Enlightenment with reference to Isaac Newton and John Locke.
That is why there is no unusual data (almost all data was unusual), mainly because the experiment was done poorly. Research: My research is: (Primary Sources: Andrew Winebarger, youtube, How to make a toy parachute, 2008. ) (Secondary Sources:Yahoo Answers.)
3. In this experiment, the percent yield was 90%. This number implies that there was little error in this experiment. However, this result could have been caused by certain external factors.
The purpose of this experiment is to investigate the kinematics of the motion of a cart bouncing on an inclined plane and its energy transformations due to various mechanisms. The position vs. time graph displays as the cart goes down the inclined plane, the position decreases because at position 0m, that is the stopper and therefore, as the cart goes toward the stopper it is getting closer to 0m. As the cart bounces back, the position increases because the cart is moving away from the stopper. This pattern continues to repeat until the cart comes to a stop. The velocity vs. time graph shows as the cart goes downward the velocity increases in the negative direction. When the cart goes toward the stopper that is the negative direction.
The Influence of Isaac Newton Isaac Newton’s influence and reputation exceeds him more than two hundred years after his death. Newton made great contributions to the scientific revolution, but, unbeknownst to the people of his time, had secrets that no one would have guessed. Isaac Newton explored the properties light, invented calculus and discovered the reason the earth (and other planets) revolve around the sun in an elliptical orbit. Isaac Newton’s “dark” secrets include studying alchemy and studying theology.
History of Classical Gravitation Theory Galileo studied motion especially that of freely falling bodies. He saw a problem with the Aristotelian theory of motion because it required a stationary earth so he developed his own theory of motion. He is probably best known for a story in which he dropped two different size balls from the Leaning Tower of Pisa at the same time. The two balls hit the ground at almost the same time which led him to formulate the law of freely falling bodies.
Determining Smallest Possible Charge on Droplet Using Millikan Oil Drop Experiment Simulation Abstract: The purpose of this lab was to determine the value of the smallest charge using a Millikan oil drop simulation on the TI-83+ graphing calculator. This was done by using a program on the TI-83+ graphing calculator, where an oil droplet was placed on the screen and cursor keys were used to adjust the voltage until the droplet is suspended. The droplets radius, voltage, plate separation, and charge are then stored into the system. The simulation was repeated for 40 droplets. After the mass and charge of the oil was calculated, then rearranged depending on step size to find smallest charge, which was 1.67E-19.