... publisher Engineering Mechanics - Statics Chapter Force (kN) V1( x1) V2( x2) 0.5 1.5 2. 5 2. 5 3.5 x1 , x2 Distance (m) Moment (kN-m) M1( x1) M2( x2) 0.5 1.5 3.5 x1 , x2 Distance (m) Problem 7-7 0 Draw ... −w x wL V max = w2 = −w x w2 L w1 = 88 .9 lb ft ⎛ Mmax ⎞ ⎜ ⎟ ⎝ L ⎠ w2 = 22 .2 Now choose the critical case lb ft w = ( w1 , w2 ) w = 22 .22 lb ft Problem 7-5 8 The beam will fail when the maximum ... (kN) V1( x1) 40 V2( x2) 20 V3( x3) V4( x4) 20 40 8 x1 , x2 , x3 , x4 Distance (m) Moment (kN-m) M1( x1) 20 M2( x2) M3( x3) 40 M4( x4) 60 80 x1 , x2 , x3 , x4 Distance (m) 707 © 20 07 R C Hibbeler...