blame: Date: Coefcients of Friction Purpose: Determine the coelcient of static and lcinetic friction using a computer simulation between a crate and the ground Use the link below, then click on the program called Friction h hetcolorado.edu-'sirns.-html."forces-and-tnotion-basics."latest.-'forces-and-motion-b as ics en.httn1 5am not pushlng 5am pushing but has not Sam pushlng and box moving movlng lIaterials: Computer-"Phone Pre Lab questions: 1) Compare and contrast static and kinetic iction 2) How can the maximum static iction be determined? Be sure to include Newton's second law in your answer 3) How can the lcinetic force of friction between two surfaces be determined? Be sure to include Newton's second law in "your answer Procedure: 1) Using the answer from me lab question 2 you should be able to slowly increase the force until the crate begins to more. Utilize the speedometer tool on the side 2) Then= using your answer to Ere lab question 3 you should be able to reduce the force until the crate reaches a constant speed to determine the kinetic friction 3) Increase the mass added by varying the objects placed on top of the crate. You can place up to two on top at a time 4) Using the total mass column: determine the normal force for each trial. Data: Mass of crate (kg): Trial E-Iass Added Total Mass 1:me {acting on Force of Force of = {added to block) (block masses) the block) Static Friction Kinetic Friction g g (X (X '5. Calculations: 1) Show 1 sample calculation for the Formal Force. 2) Show a sample calculation for Nets'tons second law for the static and kinetic force of friction Graph: You may do by hand or on sheets. 1) 0:0 is a data point on the graph {make sure you include it by not putting in any Lhreaks\" in either axis). 2) Create two Force of Friction 't's. Norma]. Force graphs from the data (static vs normal and kinetic vs normal). You can use the same page for both sets of data if doing it by hand. 3) Draw a best fit line for each graph. Remember a best tit line is a \"graphical average," not simply a line connecting the first and last data point. 4) For each graph. pick two points on the best t line (these should not be data points) and find the slope of each best t line. Make sure \"you identify on the graph which pairs of data points were used for the calculation of slope. Show this work right on the graph. 5-) Include the full equation for each line 6) Make sure it is clear which graph is kinetic and which is static. 7) Label all parts of the graph. Questions: 1) Explain why 0,0 is a data point on the graph even though you did not "measure it.* 2) What is the significance of the slope of the lines? 3) Which is larger the coefficient of static friction or the coefficient of kinetic friction? Why? How do your graphs show this? 4) What is the effect of surface area on the force of friction? 5) Reopen the program and place the unknown "gift" on top of the crate. Using either of your calculated coefficients of friction, determine the mass of the gift