I. Experimental Question/Purpose The situation being analyzed for this experiment is a cart sliding down a ramp and crashing into different mass blocks in different trials. The purpose is to see how changing the mass of an object affects how far it gets pushed by another object going at the same velocity every time. II. Procedure/Methodology For this lab, I will need a ramp with, a motion detector, a computer with Logger Pro, a measure tape or meter stick, a cart, a scale, and blocks of different masses. Since I am figuring out how the cart directly affects the blocks, I will use same cart for every trial. The mass blocks will be changed throughout the trials, because the mass is the independent variable, and the distance they are pushed …show more content…
I will do this to see the velocity of the cart when it impacts the block, and use that value as a reference for the analysis. I will press the play button on Logger Pro before letting the cart go, ensuring that I do not let the cart go before pressing play. To see the velocity at impact, I will look for the value on the graph that is right before the cart slows down. For the remaining trials, I will not use Logger Pro anymore, as now I will only be looking at the distance the blocks are pushed. For the first trial, I will place the smallest block available because after this trial, more blocks can be added on to make the mass bigger. Then, I will let the cart go and let it collide with the block. After the block stops moving, I will measure the distance from its starting position to its ending position, to give me the output of the data. This will be repeated for every trial, making sure that the cart and the masses are at the same starting position every time, but the masses will change for every …show more content…
The points on the graph are not in a perfect straight line, suggesting that there were imprecisions in the procedure, causing discrepancies in the data. The main possible source of impressions may have been the blocks used for this experiment. These blocks are made of wood, and were placed on the ramp, which is made of metal. When these surfaces slid against each other, they created friction, which affected the outcome. Also, not all wood is the same, and not the same piece of wood was put at the bottom every time, creating different amounts of friction every time, which is something that was not intended. If there was no friction, the graphed data would be a straight horizontal line because no outside forces aside from the cart would be acting on the blocks. A smaller source of imprecision could also be measuring the distance that the blocks travelled. When the blocks were pushed, the were occasionally tilted a little sideways, which left the corner of the block being the part I measured for the distance pushed, which could also created imprecisions in the data. How these imprecisions affected my data is by that it allowed the data points to be too high or too low from the best fit line depending on the friction that the block of wood was experiencing or how precisely the distance pushed was
Table 7. 6 Machines 8 parts, Problem 3 Parts Part volume Part route Machines M1 M2 M3 M4 M5 M6 P1 50 1 1 3 2 2 1 2 3 4 3 2 1 3 4 P2 30 1 1 3 2 P3 20 1 1 2 3 P4 30 1 1 2 2 2 1 3 P5 20 1 3 2 4 1 2 1 2 P6 10 1 1 2 3 2 1 2 3 P7 15 1 3 1 2 2 3 1 2 3 1 2 P8 40 1 2 1 Table 8.
The hypothesis made, the density calculated in the experiment will stay the same because the density of the unidentified object will never change, was supported. The results support the hypothesis because in every trial the density always came out to 9g/mL. In trial one the mass was 71.16g, the volume was 8mL, and the density was 8.895g/mL, but when rounded to the proper sig fig came out to 9g/mL. In trial two the mass was 71.12g, the volume was 8mL, and the density was 8.89g/mL, but when rounded to the proper sig fig came out to 9g/mL. In trial three the mass was 71.14g, the volume was 8mL, and the density was 8.8925g/mL, but when rounded to the proper sig fig came out to 9g/mL. When averaged the mass was 71.14g, the volume was 8mL, and the density was 9g/mL. Errors that could have occurred are, not calculating the density correctly, not completely submerging the unidentified object with water in the graduated cylinder to get the volume, not rounding the sig figs correctly when finding the density, not measuring the unidentified object’s mass in grams, not measuring the unidentified object’s volume in milliliters, and not writing the correct units with the proper number or not the correct unit at all.
An independent variable is the weight. The dependant variable is the speed. Some control variables are the track, wheels, and body style. Three different pinewood derby masses were tested in the experiment. 140g, 173g, and 204g. Each weight division was tested 3 times.
Between each of the total 5 trials you are going to alternate the direction of the stimuli. With a soft bristled paint brush, you are going to now remove a rollie pollie of your choice from the petri dish. Place the rollie pollie in the central intersection of the smaller chamber, facing away from either cotton ball. Cover the chamber with a card stock box. Every 30 seconds for a total of 5 minutes, you are going to observe the isopods and record the location of where the rollie is at.
Some ways to improve the lab are to make sure that the error sources are fixed. Next time, it should be imperative that the table being used is perfectly balanced and that the tape is not placed on the inside
All the experiment was depending on fortune and luck and can not be successful at all because the performers do not have proper direction to perform the experiment. For the experiment, workers should have proper equipment, standardise and should have power to do work their own way. It is also concluded that the quality of production might be great in future by use the present statics and create a quality control chart and solve the problem in specific problems which effects the project. The common wisdom is that if only people did not make so many mistakes, there would not be so many problems. But even with the variation contributed by the people reduced to zero, there are still too many red
PURPOSE The goal of this lab was to build a mousetrap powered car. The mousetrap car needed to travel fifteen feet. The purpose of building these mousetrap cars was to demonstrate our knowledge of motion, friction, force, distance, and energy. We have studied these concepts, and each one is a factor in the success of a mousetrap car.
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) /
8) Explain how each experiment type (question 7) differs from the
Between days one and two the difference in mass of the gummy bear was increased by 5.9 grams, having about a 169% increase in mass. (#2) Similarly, the volume of the gummy bear increased by 7.374 cm3 having a 246% increase after soaking in the
Purpose: The purpose of the experiment was to understand how strong a bessbug by using weights and observing the time the best bug takes to travel to a certain distance. Background Information: The horned Passalus; also known as the Bess Beetle, is widely known beetle that is easily recognized. The Bessbug is a shiny black insect with a hard shell.
INTRODUCTION The goal of this group project was to design and build an original paper model marble roller coaster that must be able to transport a marble from start to finish without interruptions. The design had to be unique and thrilling but safe; and the marble must come to a complete stop at the end of the roller coaster. The track should have the following components: at least two hills, one loop and one turn, and if possible a jump.
Physics, period 3 Malak Mokhles Data collection: Jan To measure the period of a swinging stopper for three selected radii in order to calculate the centripetal force Data Table Calculations Calculate the centripetal force acting on the stopper. (Fc=mac) 50 cm radius: (0.025kg)(50m/s2)=1.3N 35 cm radius: (0.025kg)(43m/s2)=1.1N 25 cm radius: (0.025kg)(39m/s2)=1.3N State the weight of the washers 50 cm radius: 15 washers=0.75N 35 cm radius: 15 washers=0.75N 25 cm radius: 10 washers=0.50N Calculate the percent error for each radius (% error =|theoretical - experimental /( theoretical ) | × 100%) 50 cm radius: |0.75 – 1.3 /(0.75) | × 100% = 73% 35 cm radius: |0.75 – 1.1 /(0.75) | × 100% = 47% 25 cm radius: |0.50 – 1.0 /(0.50) | × 100% = 100% Analysis/Discussion
Thus the measurements will repeat for each experiment, where the paper cup’s height from the ground varies in each
This experiment has to be carried out carefully