577 (a) (For 1/2 credit) For the accelerating system shown, write down all the equations needed to solve for acceleration aj (in terms of my, m2, m3, 0, u, and g). a1 (If you write separate equations, not combining m2 anything in your head, you should get 6 equations. List the 6 unknowns in the equations.) - u no m (b) Show that acceleration an is: 0 Horiz. g [ 2m3 + 4m2 - 4mi (sin 0 + u cos 0)]/ (4m1+4m2 +m3) m3