60 Versitility r1 12 r2P r3 r1 given 100 given cm theta 1 theta 2 theta 2P theta 3 given given theta 2 theta 3 degrees An adjustable exercise bench shown in the picture, schematic and vector model. In this bench, the adjustment holes are on the rear bench leg (r1). You need to select pin locations (along rear bench leg defined by r1) to adjust the bench to fixed angles (such as 0, 30, 60, 90 degrees). ANGLES GIVEN IN DEGREES. Solve for coefficient rk (magnitude) resulting from the loop closure solution. Use the method covered in class. Assume that the angle of the bench (theta2) is given. Write your loop equation in a clock-wise direction. Given data is here and on figure and table. theta1 = 160; r2 70; theta_2 = 75; r3 = 104