Perpendicular and Parallel Forces. A 500 +/~ 1 g aluminum block sits in the middle of a balance. Strings with small mass hangers are attached as shown in the diagram. The mass hanger on the right has a total mass of 100 +/ 1 g. The hanger on the left has a mass of 50 +/- 0.5 g. Assume that the balance reads 400.1 +/~ 0.1g. As before, follow the procedure in the lab manual to obtain a free body diagram and ultimately the second law equations for the aluminum block. It will be easier if you separate the x and y forces and deal with each direction individually. When you have completed writing the second law equations above, answer the following questions: 2. What is the magnitude of the frictional force acting between the aluminum block and the balance? (You should be able to determine this from your free body diagrams.) 3. Calculate the numeric values for the forces given. Using the second law equation you wrote for the vertical forces, verify if the forces sum to zero within experimental error. If not within the expected experimental error, are the values obtained out of reason considering the apparatus and experimental arrangement? 4. You add 50 g of mass to the @ mass hanger (for a total mass of 100 g), what is the frictional force between the aluminum block and the balance? 5. Leaving the left mass hanger with a total of 100 g mass, you add 100 g of mass to the right mass hanger (for a total mass of 200 g). What is the frictional force between the aluminum block and the balance