Mass 1 Position 1 Mass 2 Position 2 Mass 3 Position ( ky) (m) ( kg) (m) .kg) 3 (in) (20)(9.8)(1.5) + (30) ZC 1.5 m L-ft 30 0.50 m Left (9.8)(0.5) = (60)(9.8)x 60 0. 15 m X = 0.75 Right 20 1.0 m Left 60 2.0 m Left 80 80 1.5 m Left 30 0.5 m . tight 60 0.25 m 60 1.0 m Left 80 Right 20