Preview

Long Lab Report Physic

Powerful Essays
Open Document
Open Document
3110 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Long Lab Report Physic
Kinetic Friction Experiment #13

Joe Solution E01234567 Partner- Jane Answers PHY 221 Lab Instructor- Nathaniel Franklin Wednesday, 11 AM-1 PM Lecture Instructor – Dr. Jacobs

Abstract The purpose of this experiment was to examine kinetic friction and what factors affect it. We pulled a wood block across a surface to determine whether the surface area of the block or the type of surface affects friction. The surface area did not appear to affect friction, since there was a small percent difference of 6.16% between different surface areas. The type of surface did as the difference in values was large, at 72.2%. (75 words)

Introduction The purpose of this experiment is to examine kinetic friction and the factors that affect it. The two factors that are examined within this experiment are the surface area of the object and the type of surfaces in contact with one another. Both of these will be tested and compared to see which affects the value of kinetic friction Friction is a force that always opposes the motion of an object. Friction can be divided into two different types. One is called static, and one is called kinetic. Static friction is a force between two objects that are not moving relative to one another. For example, an object resting on a slope, but not sliding down the slope, is kept in its position by static friction. Static friction must be overcome to cause an object to move across a surface. Once enough force has been applied to an object, it will begin to slide across a surface and kinetic friction will then act on the object. Kinetic friction occurs when two objects are moving relative to one another with one object sliding across the surface of the other and it opposes the motion of the object. Both types of friction are described by different coefficients. These values are known as the coefficients of static and kinetic friction respectively. The coefficient of static friction is usually higher than that of kinetic friction. A small wooden block

You May Also Find These Documents Helpful

  • Good Essays

    Weigh the two friction blocks in kilograms. Then multiply that number by g, 9.8, to find the blocks’ weights in Newtons and record it.…

    • 471 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Nt1310 Unit 4

    • 313 Words
    • 2 Pages

    2) In Fig. 6-33, two blocks are connected over a pulley. The mass of block A is 7.8 kg and the coefficient of kinetic friction between A and the incline is 0.13. Angle θ of the incline is 44°. Block A slides down the incline at constant speed. What is the mass of block B?…

    • 313 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    The coefficient is typically less than the coefficient of static friction, reflecting the common experience that it is easier to keep something in motion across a horizontal surface than to start it in motion from rest.…

    • 824 Words
    • 4 Pages
    Powerful Essays
  • Satisfactory Essays

    Lab 106 Oct17

    • 288 Words
    • 2 Pages

    This lab was pretty successful in the end. The % errors were only 1.8% and 25.1%. The 1.8% came from the kinetic friction, which was likely due to either round off errors or data that was slightly off. The 25.1% from the static friction can be due to a number of factors. The angle error is around 4 degrees less, so the angle could be a result of a different, extra frictional force during the experiment, which stops the block from moving. The experiment does not need much improvement since it ran pretty well. The picture below describes the force needed to pull the cart. Between A and B, is the force needed to build up to the maximum static frictional force. The peak, B, is the maximum static frictional force. The flat line is the kinetic frictional force needed to pull the cart. The normal force affects both frictional forces because it is the normal force multiplied by the coefficient of friction to get the frictional force. The static friction is always slightly higher than the kinetic friction, but seem to increase at the same rate.…

    • 288 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    KIN 330 Exam 1 Study Guide

    • 3223 Words
    • 13 Pages

    Dynamic friction (aka sliding friction or kinetic friction): when dry friction acts between two surfaces that are moving relative to each other…

    • 3223 Words
    • 13 Pages
    Powerful Essays
  • Good Essays

    Lab Report

    • 1398 Words
    • 6 Pages

    The homogenates provided were made by homogenizing tissues in a sucrose phosphate buffer in a 1:20 ratio. The protein concentration in bovine cells was measured by diluting the homogenate with a 1:5 ratio; 50 microliters of homogenate and 200 microliters of water. Then 5 known protein concentration samples which were 0.4, 0.8, 1.2, 1.6, 2.0 mg/ml of bovine serum were used to determine absorbance with a spectrophotometer. Two additional samples were made; one was blank and the other was for the specific homogenate sample. Then 3 microliters of bradford assay reagent, which indicates the amount of protein present by color, was added to all samples. The spectrophotometer was zeroed at 595 nm. A standard curve was made with the different absorbencies and concentrations. After the linear equation was formed, the unknown sample concentration was determined using the standard curve equation. A Gel Electrophoresis was used to perform a qualitative analysis. The use of 5 microliters of the homogenate was heated to 80 degrees Celsius. Then the homogenate was transferred to a 2-microliter-protein gel sample buffer. Samples loaded on to the gel was run at 100 v and stained with comassie blue; observations were made next lab. (Clendening 2014)…

    • 1398 Words
    • 6 Pages
    Good Essays
  • Good Essays

    Mousetrap Car

    • 906 Words
    • 4 Pages

    Explain all the aspects in which friction helped your car perform to its optimal capabilities and all the aspects in which friction may have prevented your car from the performing to its optimal capabilities…

    • 906 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Practice Quiz

    • 5122 Words
    • 42 Pages

    slightly less kinetic energy. 5. None of these 036 10.0 points Static friction 0.49 between a 0.9 kg block and a 3.9 kg cart. There is no kinetic friction wong (eyw89) – Quiz 2 Practice – sudarshan – (57415) F 3.9 kg µ = 0.49 9.8 m/s2 between the cart and the horizontal surface.…

    • 5122 Words
    • 42 Pages
    Satisfactory Essays
  • Good Essays

    lab report

    • 623 Words
    • 3 Pages

    Obtain for dry test tubes and number them 1 through 4. Prepare two dry Pasteur pipets with bulbs attached. Place 9.0 mL of hexane, 2.0 ml of acetone, and 2.0 mL of solution of 70% hexane-30% acetone into separate Erlenmeyer flask. Label and stopper each flask. Place 0.3 mL of a solution containing fluorine and fluorenone into a small test tube. Stopper the test tube. Prepare one 10-cm x 4.3 cm TLC with four marks for spotting. Prepare four micropipets to spot the plates.…

    • 623 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Lab Report

    • 316 Words
    • 2 Pages

    apply an analytical technique to estimate the relative length of each stage of the cell cycle.…

    • 316 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Miss

    • 380 Words
    • 2 Pages

    The size of frictional forces can be reduced bystreamlining the object or lubricating any moving parts.…

    • 380 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Abstract: In this lab there were two principals investigated. The first was the relationship between applied force and acceleration. The second was the relationship between mass and acceleration. To study these two relationships, my partners and I used a dynamic cart with added mass on it. This cart was then attached to a pulley system on a “frictionless track” where it was pulled by a string bearing mass over the edge of a table. In the first relationship tested, applied force and acceleration, mass was moved from being on the cart to being on the end of the pulley. My partners and I measured the acceleration with the LabQuest computer every time the cart was released. In order to test the relationship between mass and acceleration, my group added different amounts of mass to the cart and measured the changes in acceleration. From all of the data collected we concluded that force and acceleration have a direct, linear relationship. We also determined that mass and acceleration have an inverse, quadratic relationship.…

    • 1874 Words
    • 8 Pages
    Powerful Essays
  • Satisfactory Essays

    To experimentally conclude whether the average radius of the friction plate is proportional to the frictional torque.…

    • 382 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    Abstract

    • 321 Words
    • 2 Pages

    The coefficient of friction is a number which represents the friction between two surfaces. Between two equal surfaces, the coefficient of friction will be the same. [5]…

    • 321 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Evil or God

    • 568 Words
    • 3 Pages

    1.)the main disadvantage s of friction is that it produces heat in various parts of machines. In this wat some useful energy is wasted as heat energy.…

    • 568 Words
    • 3 Pages
    Satisfactory Essays