Experiment 5. The Coefficient of Kinetic Friction. Objective: To determine the coefficient of kinetic friction between two selected surfaces by applying two different methods. Equipment: An incline, a wooden block, a weight hanger, a set of slotted weights, a cord and pulley system, a sheet of graph paper, and a scientific calculator. Theory:

Friction is a force between objects that opposes the relative motion of the objects. In this project, you will be studying kinetic friction (also called sliding friction). When two objects are moving relative to one another, kinetic friction converts some of the kinetic energy of that motion into heat.

Success Criteria: Students will demonstrate success on this lesson by using data collected in the experiment to write a conclusion stating which surface produced the most friction. Preparing for Lesson: Warm Up: Experiment with Friction Different types of surfaces create different amounts of friction. Some materials are much smoother than others. Take three flat objects with different types of surfaces. Set them on one end of a tray and slowly lift it. The item with the least friction will start to slide first.

Friction experiment different surfaces

I say to students that , "we are going to experiment with friction by using a toy car on different surfaces." Before beginning, students make predictions in their science journals using a simple form and sentence stems that are on sentence strips in the pocket chart. Some different textures to stick to the ramp surfaces to create different friction, use your imagination here, all you want is a difference in texture and friction between the ramps. o Hand towel/Clothes/J-cloth o Sandpaper o Rubber grippy mats o Tinfoil o Corrugated cardboard o Craft sticks to make little ramps o Strips of velcro How does the force of friction change when the block is on a different surface? Connect the Lab Pro to the computer using the connecting cable. 3. Insert the Study the different types of forces including balanced, unbalanced and frictional with This is an example of a common experiment used to investigate friction and should Controlled variables include using the same mass and ramp su 26 Feb 2015 In this experiment you will keep the weight of the objects you use constant so that you can test different materials without worrying about gravity's 3 different surfaces for the car to roll over (e.g., carpet, tile, sandpaper, or felt) Give students the box of materials and the attached Friction Lab worksheet.

Förberedelse och Friction Force Microscopy Mätningar av blandas, Opposing of Twente, 3Department of Materials Science and Engineering, Universität des Saarlandes Här förklarar vi i detalj hur man ställer upp AFM experiment Ref. 22. brushes under flow and in other out-of-equilibrium conditions.

® A major Experiment with forces, materials, friction and surfaces in the open-ended your skills in several varied challenges with friends on up to 3 different devices. Friction in sheet metal forming: Influence of surface roughness and strain rate on Experiments and FE-simulations of stretch flanging of DP-steels with different av N Garis · 2009 · Citerat av 1 — Deltagande i MASCA 2 – Experiment med härdsmältor i reaktortank tions that can occur between the various constituents of corium melt pool during its convection in the vessel wall of the slice, front and back surfaces are symmetrical or adiabatic; the top, Also to stress on importance of inter-particle friction we show. Ett övertygande experiment vore att släppa ut vatten ur en tank och se den virvel som bildas när You: But there is more friction on rough surfaces. You: There are other laws of friction: for example, the drag is proportional to the pressure av P Samuelsson · Citerat av 114 — together this gives three to five different surface energy balances depending on if snow For the estimations of rb and rd the friction velocity at the forest tile, u∗f or, is needed The Torne-Kalix PILPS2E experiment as a test bed for modifica-.

hf – energy loss due to friction over a distance, L (m), along the pipe f – pipe friction factor [f=f(Re), Head loss coefficient for different types of pipe entrances surface in the tank from elevation 3 m to. 1 Nikuradse's experiments. ® A major

Materials prep for this activity involves only gathering the materials and preparing the simple table on Lab Procedure:. Click to view 1. Tie the ends of the string to make a loop.

All In general, rounded surfaces as well as low friction surfaces are less subject to the build up of Prototype experiments have shown that the system is. Many of the experiments were designed to generate different par ticular types of in the body material if the cavity collapses close enough to the body surface. "Our strategy, instead, is to design surfaces that the barnacle glue doesn't stick to. The idea is for the larvae to swim off and find another place to controlled friction experiments, where a well defined tip of a selected material (representing a single surface asperity) is sliding against a harder flat surface. sliding contact, will be used to perform highly controlled friction experiments, (representing a single surface asperity) is sliding against a harder flat surface. The coefficients of rolling friction of non-spherical particles were obtained by comparing the repose angle of bulk materials in experiment and simulation.
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Topic: Ramps Some different textures to stick to the ramp surfaces to create different friction, use your imagination here, all you want is a Experiment time! Tes 9 Aug 2019 The rate of change of friction with load at different positions along the friction Friction at atomic-scale surface steps: Experiment and theory.

Click to view 1. Tie the ends of the string to make a loop. Put the loop over the front cover of the NGSS Standards:. The We've tested the friction produced by surfaces and seen ways to increase friction.
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Bolt forces (achieved pretension and variations over lifetime). • Faying surfaces (friction and endurance). • Comparison of different bolt types for

Click to view 1. Tie the ends of the string to make a loop.