2) Velocity Analysis of a four-bar linkage Derive the velocity loop equations and compute angular velocity of the output crank angle and the coupler angle as a function of angles , and . Assume the input crank has constant velocity = 9 degrees/s = 0.157 rad/s. In the excel file provided, calculate the values of and over the range 1 =160' to > = 205" by 5" increments (i.e. 10 values). The excel file will plot your results