position of B (cm) 55 50 45 -40 035 30 825 20 15 10 60 50 40 30 20 10 0 -10 -20 0 2 B 20 Y 40 60 XAN 5 time(s) 10 FIGURE 1. Trajectory trace of rocker end point B in two dimensions (top) and as x, y position versus time (bottom) with respect to an inertial frame attached to the ground joined to the crank.

Draw the mechanism when the driver link 2 is at 90 degrees with respect to the mechanism ground (aligned with the lower case y axis). Note, the mechanism ground is not the same thing as the Earth ground in this mechanism. Draw the mechanism at a useful scale and determine the angles of link 3 and link 4 with respect to the mechanism ground. Repeat this analysis by using the computational approach to determine the angle for link 3 and 4. Compare your results. 51.26 В 4 3 80 Y 47.5 76 14 12 02

actuating limb angular position is given as 812= 60° and the speed of the mechanism is given as é12= 50 rad/s. Do the following operations respectively. Kinematic diagram and limb dimensions are given below, in the arm slide mechanism, the a-Write the Vector Closure Equation into scalar form. b-Find S13, 014 by position analysis. C-Find Sı3Ö14 by analyzing velocity. A9A = r2 = 0.2 m A,Bo = r = 0.5 m 012 = 60° 012 = 50 rad/s S13 014 Bo 012 ri A0

1a) Plot the position in the x-direction as a function of time for both birds on the same co-ordinatesystem (the plots do not have to be exact).b) Write down the equations of motion in x and y directions for bird 1 and 2. c)Using ?⃗ଵ(?) and ?⃗ଶ(?) to represent the position vector of birds 1 and 2, respectively, write downthe components of the position vector for both birds in parenthesis format.d) Write an equation using the tangent of the position vectors that describes when the huntershould release the arrow.e) Solve this equation for the time at which the hunter should release his arrow PLEASE explain, especially 1c, d, and e