Ffr FT 3. (10 points) A box is pulled across a table with a tension applied horizontally with a constant frictional force to the left. The tension in the string is varied, and the acceleration of the box to the right is measured each time. The data obtained is recorded in the table below. FT (N) a (m/s) 25 3.3 30 4.9 35 6.7 40 8.3 45 10.1 a. Draw free body diagram representing the box in the space above. Start your vectors on the dot, which represents the box's center of mass. b. In the space provided below, create a graph that would allow you to determine the mass of the box. c. Using the best fit line from the graph above, determine the mass of the box. (Hint: Look at the equation you setup using Newton's Second Law.) d. Using the best fit line from the graph above, determine the force of friction acting on the box. (Hint: Look at the equation you setup using Newton's Second Law.)