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2 501 5a 401 4a1 Acceleration 301 Acceleration 3d1 2a1 2a la la 0 0 0 1 2 3 4 5 6 0 3 4 5 Force (number of rubber bands) Force (number of rubber bands) FIGURE EX5.8 FIGURE EX5.9 9. || FIGURE EX5.9 shows an acceleration-versus-force graph for three objects pulled by rubber bands. The mass of object 2 is 0.20 kg. What are the masses of objects 1 and 3? Explain your reasoning.Exercises 17 through 19 Show two of the three forces acting on an object in equilibrium. Redraw the diagram, showing all three forces. Label the third force 133. 1?. || 13. || 19. || - .. F F; 1 P"; F2 FIGURE EX5.17 FIGURE EX5.18 FIGURE EX5.19 Problems 35 through 40 show a free-body diagram. For each: a. Identify the direction of the acceleration vector 21' and show it as a vector next to your diagram. Or, if appropriate, write 3 = 6. b. If possible, identify the direction of the velocity vector i; and show it as a labeled vector. c. Write a short description of a real object for which this is the correct free-body diagram. Use Examples 5.4, 5.5, and 5.6 as models of what a description should be like. \f41. II In lab, you propel a cart with four known forces while using an ultrasonic motion detector to measure the cart's acceleration. Your data are as follows: Force (N) Acceleration (mfs') 0.25 0.5 0.50 0.8 0.75 1.3 1.00 1.8 a. How should you graph these data so as to determine the mass of the cart from the slope of the line? That is, what values should you graph on the horizontal axis and what on the vertical axis? b. Is there another data point that would be reasonable to add, even though you made no measurements? If so, what is it? c. What is your best determination of the cart's mass? 53. || The leaf hopper, champion jumper of the insect world, can 5'0 jump straight up at 4 misz. The jump itself lasts a mere 1 ms before the insect is clear of the ground. a. Draw a free-body diagram of this mighty leaper while the jump is taking place. b. While the jump is taking place, is the force of the ground on the leaf hopper greater than, less than, or equal to the force of gravity on the leaf hopper? Explain