Sources Of Error In Static Friction Experiment
It is not a huge problem because these microscopic changes would not be apparent on the inaccurate measuring devices. Once I collected my data, I ended the experiment, and selected the straight line part of the graph that I wanted more information on. You should try to understand this experiment in terms of the techniques that you have learned to solve the textbook friction problems. The problem statement, all variables and given/known data We recently performed an experiment to determine the static and kinetic coefficients of friction by moving a box along a board. http://nzbsites.com/sources-of/sources-of-error-in-static-electricity-lab.html
Our source was http://www.tribology-abc.com/abc/cof.htm. 3. One source of error is that we may have been accelerating the box, rather than applying a force only sufficient to overcome friction. The system returned: (22) Invalid argument The remote host or network may be down. Conclusion: In conclusion, we found that the coefficient of friction for a constant velocity is 0.1669 And, the coefficient for static friction is 0.2629 We found that the coefficient values for
Sources Of Error In Static Friction Experiment
Loading... Sign up for a free 30min tutor trial with Chegg Tutors Dismiss Notice Dismiss Notice Join Physics Forums Today! Be sure to cite your source! It was hypothesized that anobject’s mass will not have an effect on the coefficient of friction.
- This introduces a pretty significant margin of error.
- This is the measurement of how “grippy” a surface is, and is a necessary pieceof information when calculating the force of friction that is acting on an object.
- Static Friction: Kinetic Friction: Discussion Questions: 1.
- We will then press "Start" on DataStudio, and gently pull the force sensor with a constant speed parallel to the surface, which will in turn pull the cart.
- These slope values are used to compare forces of friction in constant velocity and static friction situations.
After experimenting, I have found that my hypothesis is correct. This lab did have several sources of errors that could be fixed. From this, it isknown that the force of gravity must have been equal to the normal force and therefore, thenormal force could be found using the calculation that is normally used Discussion Of Friction Experiment Then you can calculate the coefficient of friction by using the angle of the stationary surface to the ground.
One of these error points is when the force sensor is pulled for the first time, if the puller isn't gradual and applies little force first, and yanks at it instead, Static And Kinetic Friction Lab Error Analysis The normal force for each trial was calculated. normal force graph shows that the line has a constant positive increasing slope, and shoes that as the normal force increases, so does friction, and vice versa. This is the typical equation to find the force of gravity on an object butwas used in this investigation to accurately find the normal force of the wooden board onthe wooden
I was given data for cork on aluminum, yet several pages of google searching was unable to bring up the coefficient of either static friction, kinetic friction, or both for cork Sources Of Error In Static And Kinetic Friction Lab For example, coming out of a turn would mean a changing coefficient of static friction. Write down the force needed to move the sleigh from the stationary position. 6. These are small, we expected the kinetic to be small but the static was much smaller than we had predicted.
Static And Kinetic Friction Lab Error Analysis
The gravitational force creates a "towards the center of the earth" pull creating contact between materials. Pull the sleigh with a constant velocity up the board, writing down the force applied. 8. Sources Of Error In Static Friction Experiment Once the force sensor and cart were set up, I plugged the sensor into the computer, entered Data Studio, and selected "Create Experiment." In Data Studio, I selected setup, unchecked force-push Friction Experiment Lab Report This data makes sense, because static friction is always larger than kinetic friction for any given material, because there's a higher force needed to move an object from rest than to
For both static and kinetic friction, the friction force v. check over here Sign up to view the full version. The frictional force and the weight of the cart affected the magnitude of the coefficient of friction during this lab. 4. This is because the lower the coefficient is the less friction and the more sliding that will ultimately occur. - Normal force and Friction force are directly proportional to each other, Coefficient Of Static Friction Lab Sources Of Error
turin, Sep 22, 2009 Sep 22, 2009 #3 chrisfnet So if the string isn't horizontal/parallel to the board, the normal force is changed and the whole acceleration of the system is LAB, COEFFICIENT OF FRICTION Ben Sherman (A, B, C) Objectives: -To measure the coefficient of static friction between surfaces -To measure the coefficient of kinetic friction between surfaces -To determine the Sign up to view the full document. his comment is here The friendliest, high quality science and math community on the planet!
This coefficient would be only accurate for the similar situation. 2. Precaution In Friction Experiment It takes more force to overcome friction when the object is at rest than it does to keep the object moving. Splitters and particles that fall off the sleigh and ramp during the duration of our experiment cause the equipment to be ever changing and thus giving us a variance in the
For the graph, we will highlight the section of the straight line, click the symbol representing net force, and then select the mean as the value for tension and constant speed.
The rounding error is produced by human. View Full Document 10. Log in with Facebook Log in with Twitter Your name or email address: Do you already have an account? Lab Report Physics Matriculation Experiment 4 Friction We would also have tried to have a device pull the cart rather than our hands.
chrisfnet, Sep 22, 2009 Sep 22, 2009 #4 chrisfnet I'm still really confused about this. I'm guessing if the pull (string) is horizontal, the normal force would then equal the weight of the box. Discuss if your measured results fall within the range of theoretical values. http://nzbsites.com/sources-of/sources-of-error-in-chemistry-lab-experiment.html Materials: -Wooden board - Assorted Weights-Wooden block with metal hook - Protractor -Spring scale - Scale Procedure:Kinetic Friction: Once each material was collected, the obtained wooden block was measured using ascale and
Observations: Figure 1 Observations of the Kinetic Friction between the Wooden SurfacesTrialm block (kg)*m added (kg)m total (kg)F normal (N) F applied (N) ** 10.35300.3533.460.7020.3530.1000.4534.440.7530.3530.2000.5535.421.040.3530.4000.7537.381.350.3531.001.35313.262.4It is important to note the possibility The force needed to break these microscopic welds is known asthe force of friction. Your cache administrator is webmaster. This can be accomplished simply by taking two different surfaces and rubbing one on to the other at a constant velocity.
What are the variables that you assign from experimental input, what are the variables that you assign from experiemental output, and what are the unknowns that you are trying to find? This could be fixed by making sure (or putting in the lab sheet) that the person pulling the force sensor starts out with very little pulling. Attach your wooden sleigh to your Newton Scale and lay the sleight at the bottom of the board. The average coefficient of kinetic friction was .563.
Also, when an object is at rest the two surfaces have a chance to fully interlock on the microscopic level. This can be prevented by checking the track with a level, to make sure that it isn't angled. Sin = height of the ramp Length of the ramp Sin =(75.0 cm)/(235.6 cm) Angle of ramp= 18.6 degrees Finding the Fn. This is because the coefficient of friction between rubber tires and the road changes depending on if the road is wet or dry.
This is because when an object is not in motion the frictional force acting upon it is stronger than when the object is sliding. For static friction we got a coefficient of .2025. Everyone who loves science is here! Sadjadpour Email: [email protected] Chapter 5-BCH Co EE261_chapter6.pdf View more Study on the go Download the iOS app Download the Android app Other Related Materials 19 pages With the pendulum in the
The attempt at a solution Why is it necessary for the string to be level in parts one and two? Our coefficient of static friction is greater than the coefficient of kinetic friction by 0.075.
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