Conservation of Mechanical Energy 3. Draw a free body diagram (FBD) of the forces acting on each block. Use arrows to indicate the force vectors. Vary the lengths of the arrows to indicate the relative strengths of each force in relation to the others. mal mb The force vector for ma is greater than mb's. 4 . Rank, in order from largest to smallest, the magnitudes of all the vertical forces: weight of the mass on the heavier block, weight of the other block, tension in the string. Explain your reasoning for the predicted order. WA = weight of A Wb=weight of D Totension of string WASWB JT Because the weight of A is a little more than that of B, then 5. the tension CT) of the string will be smaller. While both blocks are moving, are the tension forces on the two blocks the same magnitude ? How about the accelerations? Are they also the same magnitude? yes the tension forces on both black A and B would be the same. They would also have the same magnitude but opposite directions 6. Find the net force on both blocks separately and apply Newton's 2nd Law of Motion to each. Write equations here, not numbers, and explain what the symbols mean. 7. Suppose you are solving for the accelerations of the two blocks, but you don't need to know the tension. You can eliminate tension from both equations as you did y in problem 2 above. Use this to determine the acceleration of the two blocks. (Again, this should just be symbols, no numbers.)