Nobody downloaded yet

Friction. - Lab Report Example

Comments (0) Cite this document
Summary
Weigh the wood block and record the weight in N. Set the block on the board with its largest surface in contact with the board’s surface. Through a pulley, attach the block to the weight hanger by a cord and place some weights on the hanger increasing the load to keep the block sliding slowly with constant speed…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER99% of users find it useful
Friction. Lab report
Read TextPreview

Extract of sample
"Friction."

Download file to see previous pages Record the load and the hanger’s weight and repeat this procedure placing masses of 200, 400, 600, 800, and 1000 g successively on top of the wood block. Turn the wood block on its side and repeat former task with a mass of 400 g on top of the block then turn the same block with the largest contact surface with the plane and place 400 g on top of the block, gradually increasing the load on the hanger until the block just starts to move. Set up the board as an inclined plane and place the wood block on the plane with its largest surface in contact, and gradually tip the plane up until the block just starts to slide down.
Results: Coefficient of Kinetic Friction (based on the graph) = 0.323
μk = 0.307 (procedure 4) ; μs = 0.3710 (procedure 6)
μs = 0.4073 (procedure 5) ; μk = 0.3575 (procedure 7)
Applications:
The concept may be applied by an engineer or specialist who needs to know the type/ property, mass of material, and angles of impending motion suitable for use in problems where friction is a significant factor in design and construction.

Calculations (1) Using MS Excel, Based on this, ?k = 0.323 (2) Using the data of Procedure 4: total normal force = 6.388 N and friction force = 1.962 N and since fk = ?k * FN then, ?k = 1.962 N / 6.388 N ---? ?k = 0.307 (3) From the data of Procedure 5: ?s = force to start moving the block / total normal force Trial 1: ?s = 2.7468 N / 6.389 N ---? ?s = 0.4299 Trial 2: ?s = 2.354 N / 6.389 N ---? ?s = 0.3684 Trial 3: ?s = 2.707 N / 6.389 N ---? ?s = 0.4237 Average value (?s) = (0.4299 + 0.3684 + 0.4237) / 3 = 0.4073 Deviation (trial 1) = 0.4299 - 0.4073 = 0.0226 , |0.0226| = 0.226 Deviation (trial 2) = 0.3684 - 0.4073 = -0.0389 , |-0.0389| = 0.0389 Deviation (trial 3) = 0.4237 - 0.4073 = 0.0164 , |0.0164| = 0.0164 (4) From the data of Procedure 6: ?s = tan (?max) Trial 1: ?s = tan (19°) ---? ?s = 0.3443 Trial 2: ?s = tan (23°) ---? ?s = 0.4245 Trial 3: ?s = tan (19°) ---? ?s = 0.3443 Averaage value (?s) = (0.3443 + 0.4245 + 0.3443) / 3 = 0.3710 Deviation (trial 1) = 0.3443 - 0.3710 = -0.0267 , |-0.0267| = 0.0267 Deviation (trial 2) = 0.4245 - 0.3710 = 0.0535 , |0.0535| = 0.0535 Deviation (trial 3) = 0.3443 - 0.3710 = -0.0267 , |-0.0267| = 0.0267 Difference between two values of ?s = 0.4073 - 0.3710 = 0.0363 (5) From the data of Procedure 7: ?s = tan (?max) Trial 1: ?s = tan (21°) ---? ?s = 0.3839 Trial 2: ?s = tan (19°) ---? ?s = 0.3443 Trial 3: ?s = tan (19°) ---? ?s = 0.3443 Averaage value (?s) = (0.3839 + 0.3443 + 0.3443) / 3 = 0.3575 Deviation (trial 1) = 0.3839 - 0.3575 = 0.0264 , |0.0264| = 0.0264 Deviation (trial 2) = 0.3443 - 0.3575 = -0.0132 , |-0.0132| = 0.0132 Deviation (trial 3) = 0.3443 - 0.3575 = -0.0132 , |-0.0132| = 0.0132 Questions & Answers (1) Explain in your own words why it is necessary that the block move at constant velocity in Procedures 2 – 4. The block must move in constant velocity so that no acceleration occurs which would create a net force that would affect determination of normal force and friction. (2) (a) How does the coefficient of friction depend upon the normal force between the surfaces in contact? (b) How does it depend upon the area of the surfaces in contact? The coefficient of friction decreases with increasing normal force between the surfaces of contact. However, coefficient of friction does not depend upon the contact surface area because in the experiment, values of normal forces stay the same while the force to keep the block moving uniformly does not differ much between that of the flat position and the ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Friction. Lab report Example | Topics and Well Written Essays - 750 words”, n.d.)
Friction. Lab report Example | Topics and Well Written Essays - 750 words. Retrieved from https://studentshare.org/physics/1458358-friction-lab-report
(Friction. Lab Report Example | Topics and Well Written Essays - 750 Words)
Friction. Lab Report Example | Topics and Well Written Essays - 750 Words. https://studentshare.org/physics/1458358-friction-lab-report.
“Friction. Lab Report Example | Topics and Well Written Essays - 750 Words”, n.d. https://studentshare.org/physics/1458358-friction-lab-report.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
Lab report
...?Lidia M. Lujan Lab report W14s1 Debate on Global Warming: Scientific Basis Global warming refers to the increase in the temperature of the earth's surface and troposphere. The term global warming is used interchangeably with “climate change,” referring to the other climatic changes aside from or due to increased global temperatures. The change in temperature is attributed directly due to increased in emission of greenhouse gases, largest concentration of which is carbon dioxide. The increased emission arises from human activities in the transport and energy sector (US Environmental Protection Agency). Other human activities like clearing of land, deforestation, and desertification that abet temperature...
3 Pages(750 words)Lab Report
Friction
...Friction Newton’s second law was put up to investigate the relationship between massforce and acceleration. Finding coefficient of static friction, µs and the coefficient of kinetic friction, µk. requires set formulae to determine the acceleration of a body in relation to the force and mass of an object. It is widely believed that the natural state of an object is when it is at rest. Forces are responsible for the movement of a body. To test Newton’s law, various experiments can be conducted on the acceleration and proportionality of an object. A proof of an increase or decrease in mass of the Newton’s experiment is determined by the force and acceleration achieved from the experiment....
4 Pages(1000 words)Lab Report
Lab report
...Running head: RECYCLING ALUMINUM TO ALUM Recycling Of Used Aluminum Cans to Alum: A Study Affiliation Introduction Aluminum and its alloys find several applications today, right from soda cans to aircraft material. This is because aluminum is versatile and has many desirable properties: light weight, nontoxic, pleasing appearance, ability to take high polish, high electric and thermal conductivities, corrosion resistance, malleability, ductility, non-magnetic, and non-sparking. (Greenwood & Earnshaw, 1997) Aluminum combines with other metals to give alloys with high mechanical and tensile strengths. The abundance of its ore makes aluminum and its alloys easily available - Aluminum comprises 8.3% by weight of the earth’s crust... head:...
2 Pages(500 words)Essay
Lab report
...SUMMARY SHEET Physics Laboratory Report -- Equilibrium of a Rigid Body Objective To be able to determine the center of gravity of a rigid body andpositions of weights with reference to that center that would establish equilibrium of forces and torques Method Obtain the weight (in Newton) of the meter stick and the average weight of the three meter stick clamps. Balance the meter stick in one of the clamps to determine its center of gravity. Place a clamp on one end of the stick to carry a 100-gram weight and slide the stick through the supporting clamp to locate the balance (position of the axis of rotation). Then place another clamp with a 200-g suspension and repeat the same previous step. Record positions with respect...
3 Pages(750 words)Lab Report
Lab Report
... Last 4 digits of ID: 7989 Section: Lab Spring Laboratory 7:  Ecological Niche (15 points) Part I: Definitions and Backgroundinformation 1. The niche of an organism is the overall interactions of an organism with other organisms and its range of needs (Properties of microbes). 2. Organisms might compete for food, light, and space. 3. Evolution is the process of gradual development of organisms from simple structures to intricate forms over time. Competition affects the process of evolution in that the organism that is able to compete favorably for the available resources survives and continues to thrive, whereas the organism that cannot compete favorably dies and becomes extinct. Part II: Results Table 1: Effects of Temperature...
1 Pages(250 words)Lab Report
Lab report
..., which causes floods and changes in temperature also supported our program since it would help reduce death rates in Africa. This was conducted on our face book page, where we contacted various special programs personnel’s in different African countries who endorsed our program. Works Cited Innovas. An Industry Analysis. 2010. 2012 . Levy, Charles. "2020 Low Crabon Economy." A knowledge Economy Report (2010): 1 of 76. Nesta. Innovation Experts. 2009. 2012 . Neuhoff, K. Tackling Crabon. Cambridge: University of Cambridge, 2008. Office, National Audit. European Union Emission Schemes. 2009. 2012 . Program, United...
1 Pages(250 words)Essay
Lab report
...Lab report Prediction of the Maximum Height Travelled By a Model Rocket The determination of rocket field is useful when in the quest for determining how high a rocket flies, at a given moment. In this lab, the major objective was to predict how high a rocket model could fly once launched. This involved acquiring a model rocket, then launching it to determine the figures for the various variables. Another related objective was to apply equations for basic projectile motion in determining how high a rocket can fly. Since launching the model rocket, this is considered a projectile motion influenced by height of launch pad, gravity and velocity imparted by the engine. Consequently, there...
3 Pages(750 words)Lab Report
Friction
...PHY 122: Friction: Determination of μS and μK. Lab partners: Group number: experiment: Section SLN: TA’s Part 3: Wooden block with one weight. Mass of the wooden block, mb= 0.11804 kg Mass of the heavy weight 1, mw1 = .494 kg Number of measurements (pulls), n= 15   STATIC FRICTION KINETIC FRICTION Average Force  2.735  2.0 Standard Deviation .216   .093 Uncertainty .0558  .024  ===================================================================== Part 4: Statistical distribution of data. The attached histogram has been created for the static / kinetic (select one)frictional force data.   LEFT BOUNDRY RIGHT BOUNDRY # OF MEASUREMENTS WITHIN...
4 Pages(1000 words)Lab Report
Friction
...Friction Friction Theory: Friction is a force that always tries to limit the pull or push force when one object is makes contact with another surface. In more simple way, friction is the force that restricts the motion of the one object sliding at another object. Friction is also important in many matters, like cars and vehicles use the friction between tires and roads to move the vehicle. On the other hand, it produces wear and tear in the engine parts when they slide over one another. In order to estimate the friction proper mathematical systems are utilized to evaluate the force of friction between the...
3 Pages(750 words)Lab Report
Lab report
... suspects of sodium and potassium poisoning in criminal investigations. Bibliography Battefort, F. et al., 2012. Suicide Attempt by Intravenous Potassium Self-Poisoning: A case Report. Case Reports in Emergency Medicine, pp. 1-3. Bosse, G. M., Platt, M. A., Anderson, S. D. & Presley, M. W., 2011. Acute oral potassium oversode: the role of hemodialysis. Journal of Medical Toxicology, 7(1), pp. 52-56. Chawla, R., 2003. Practical clinical biochemistry: methods and interpretations. 3rd ed. New Delhi: Jaypee Bros. Medical Publications. Kupiec, T. C., Goldenring, J. M. & Raj, V., 2004. A non-fatal case of sodium toxicity. Journal of Analytical Toxicology, 28(6), pp. 526-8.... Sodium and potassium are cations that are found in the extracellular...
6 Pages(1500 words)Lab Report
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Lab Report on topic Friction. Lab report for FREE!
logo footer
Contact us:
+16312120006
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us