13. A block of mass m rests on an air table (no friction), and is pulled with a force probe, producing the Force vs. Acceleration graph shown below. Force vs. Acc Force (N) 2.0 acceleration (m/s2) 13a. Using Newton's Second Law (N2L) and the slope of the graph determine the mass of the block.The same block is now placed on a rough surface. 13b. Draw a coordinate axis frame and Free-Body Diagram for the block as it is being pushed across the horizontal surface. (Hint: Make sure you align this first coordinate axis [call it x and y] frame with the greatest number of initial forces.) D 13c. What is the minimum value of an applied force, lm, (magnitude and direction), which will cause the block to just begin to move? 13d. After the block begins to move, the same applied force determined in part (14c) continues to act on the block. What is the acceleration of the block along the rough horizontal surface? READ CAREFULLY! ) r The force, Fapp, then gets tripled, 3Fapp, which then pushes the block up an incline plane with an inclination angle of 6 = 20', with the same coefficient of kinetic friction between the block and the inclined plane. 13e. Draw a new coordinate axis frame and Free-Body Diagram for the block as it is being pushed up the incline. (Hint: Make sure you align the new coordinate axis frame [call it x' and y'] with the greatest number of forces and break up the remaining forces into the x'-y' projections.) Trig Hints: sin(20) = 0.3420 cos(20) = 0.9397 El 13f. Determine the magnitude (scaler value) of the frictionalforce, Ikl acting on the block as it slides up the incline. 13g. Determine the final acceleration (vector!) ofthe block as it is pushed up the incline