top-rated free essay

# IA LAb Write UP

By ghhgt Jan 05, 2014 537 Words
IB Friction Lab Write Up

3. The slope of my graph represents the constant value for myu as the Normal Force and the force of friction are constantly changing.

4. The kinetic slope is the biggest by far because it represents the less coefficient of friction it has to overcome to move easier.

5. According to my data table, an increase in weight always, without fail, creates a greater force of friction.

6. An increase in weight does not affect the coefficient of friction by also increasing it, although theoretically it shouldn't affect it at all because myu is constant.

7. If sandpaper were glued to the bottom of the block then, the coefficient of friction would increase because its a different surface and also because the force of friction is increasing.

8. One way to decrease the friction is to lubricate the block and table top, and also another way is to decrease the mass of the object which would in turn decrease the friction between the two objects.

Conclusion:

In this particular experiment, the determinate was to determine the coefficient of friction against a certain object. Between individual data points there was not so large of a range, maybe a tenth of a Newton at most. The slopes of the graphs were very representative of the final measurements or calculations for the greek letter myu. They told a pretty convincing tale in that the lines of best fit, ran very nicely through the data points.

There were a few definite possible sources of error. One of these was the fact that the measurement tools we used were hardly accurate or precise. It was extremely hard to perceive the newton force from the weight when it was spilling left and right over and over again. For example some of the percentages of percent error were extremely large in that some were above 50% error (62.7%), which means they were half incorrect. This is a large number that could be corrected. Also, the weights, although pretty precise, could not have weighed their true amounts and that extra gram could have skewered the results. The experiment could have used higher grade materials and equipment to help settle good results.

There are a couple things that can be done differently in the lab. One thing that would could be done differently would be to take much more data. Theoretically, you could take an infinite amount of data which would render the most accurate and substantiated results. Although this is most impractical in the real world. Also you could have used a digital meter that read and recorded info on a graph when the object was pulled. This would have enabled for the most accurate recording of data. This would record the maximum values and average a constant using non rounded numbers for the most accurate amount of data. Another way ti achieve more accurate data would be to have had a robotic arm that was programmed to run the (now perfect) weights at a constant speed that is ever constant. I would also make sure the surface was perfectly flat to make sure that there is not existing forces acting upon the object. These things would make the lab a lot more accurate than it was before.

## Related Documents

• ###### Transpiration Lab Write Up

...Transpiration Lab Write-up. Introduction Transpiration is the evaporation of water from plants. It’s not simply a hazard of plant life but it’s the engine that pulls water from the roots to cool the leaf and supply photosynthesis. The concentration of water vapor in the atmosphere is lower than that in the leaf. Because of this differe...

• ###### Cells Lab Write Up

...John Leone  Lab Partner(s) Ethan Davis & Ryan Hanna  Date: 12/10/14  Instructor: Dr. Chuckran  Period: H    Plants and Animal Cells    Abstract:  In this lab, you will find out how plant and animal cells are alike and how they are different.  The onion elodea cells were both plants, so they had...

• ###### Evolution Lab Write-Up

...Evolution Lab A. 1. a. The default value of 20 cm of rainfall is relatively low compared the range that the island may receive, which is anywhere between 0 cm to 100 cm. b. From an average of 20 cm of rainfall I would expect more hard seeds to be produced. 2. a. The beak size of 12 mm is relatively shallow compared to the available...

• ###### chromatography lab write up

...Utilizing the Rf value, we can observe the ratio of movement certain substances make. The “movement” is determined by polarity, solubility, and the choice of solvent to be used. Each combination will result in a unique ratio, thus allowing us to compare unknown samples and discover their identity. The Rf value is essentially the rate the ...

• ###### Enzyme Lab Write Up

...decrease, as the catalase will speed up the reaction. MATERIALS: 90 mL clear, plastic Solo cups filter paper bottle of regular hydrogen peroxide 1%, 25%, 50%, 75%, and 100% substrate concentration tweezers timer permanent marker pen/pencil paper for data PROCEDURE: The experiment begins with five beakers full of various s...

• ###### Mollusks Lab Write-Up

...December 17, 2012 Zoology In this lab, my partner Kylie and I will be examining the internal and external features of the clam. “Like all mollusks, a clam has a mantle which surrounds its soft body. It also has a muscular foot which enables the clam to burrow itself in mud or sand” (Miller and Levine). Clams are mollusks with two valves a...

• ###### Titration Lab Write Up

...﻿Abstract The purpose of this experiment is to determine the concentration of acetic acid in vinegar by using 0.1 M HCl and NaOH solution. By performing three titrations to determine the concentration of the base, the concentration of the acid was determined to be 0.600 M. It was possible to determine its concentration by standardizing the s...

• ###### Homeostasis Lab Write-Up

... Homeostasis Lab: The Effects of Exercise on Homeostasis Purpose: To discover the effect that various levels of exercise have on specific body parameters. Hypothesis: If a subject walks up and down a flight of stairs for eight minutes, then they start to sweat more, their heart rate, body temperature, and breathing rate will incr...