FyI coso+ Fy2=m(uar to →F1+F2≈m(On+U) yI COSd L2Fy2 =la LFy1-12Fy2≈12On YI 6/246/24 L L2 L1  2 1   r u2 u V  x y  2  FY 2 FY1 u1 