where the acceleration (aC ) is the acceleration of the slider (aslider) and has a horizontal component in the negative direction; however, its vertical component is zero.
As complex as they seem, there are only two unknowns in Eqs. (10.20) and (10.21), the acceleration of the slider (aC ) and the angular acceleration (αrod). The angular velocity (ωcrank) and angular acceleration (αcrank) of the crank, the angle (φ) along with the lengths (LAB) and (LBC ) would be known, and the angle (β), the angular velocity (ωrod), and the velocity of the slider (vslider) would have already been found from the velocity analysis.
Solving for the angular acceleration (αrod) in Eq. (10.21) gives