Friction Lab

Spring Scale Wooden Block Concrete surface 1. The figure above shows the set up used in the lab to determine the coefficient of friction between two surfaces. In the space below, explain why two different surfaces were tested during data collection.2. Draw a force diagram for the block and weights being dragged to the right with a constant velocity. a. Are the forces balanced or unbalanced? b. Which forces are equal in magnitude? (numerically equal) 3. Identify the independent and dependent variables. Independent variable Dependent variable4, Which variable is the control variable (remains constant) in the experiment?6) Calculate the coefficient of friction (slope) for wood on concrete? 7)Using the variable of experiment, write the equation(mathematical model) the relation between Fn and Ff? 8)Using the mathematical model predict the frictional force of an object experiencing 8.3N and coefficient of friction that is 0.36