P:=m(-veI sin p-vc2 COs -vC3) =m-osn45-5 ocos0-21@) 2 12 5 2 2 2 3-N2)=-22ml0 √ 1 P,m(veI cosop+vc2 sin e) AB m(lcos4 losin 0) 2 1 B =mlo 2 2 2 x 777n7 √2mlo 22 2 ) 10 1 2 5 2 2 2 1 (   m l m l = =  +  ( cos sin ) Py = m vC1  + vC2  ( sin cos ) x C1 C2 C3 P = m −v  −v  −v cos 2 ) 2 5 sin 45 2 1 = m(− l − l  − l  ml 2) 2 2ml 10 3 2 5 2 2 2 1 = (−  −  − = − sin ) 2 5 cos 45 2 1 = m( l + l  