x1(t)  =    0.5 * [  2.24 m  cos ( 1    rad/s * t    -  1.11  rad )  ]

             - 0.5 * [  3.21 m  cos ( 1.73 rad/s * t    +  0.367 rad )  ]



   x2(t)  =    0.5 * [  2.24 m  cos ( 1    rad/s * t    -  1.11  rad )  ]

             + 0.5 * [  3.21 m  cos ( 1.73 rad/s * t    +  0.367 rad )  ]