Trabalho 4

• No. : i j k |(400-150)i + (-500)j + 225k + 600]k 300 150 200 200i - 225k • uki : -550i + 875j + Nko (F4.32) • Fe emj : 500cm i + 300cm 3j + 100j = 100 i j 5 5 Fe : (10i + 15q + 2)j N |Fe| = 18,884 • M (abarro) = : i j z51 300cm 20 = 20 k dFej = Mro 5 d = 120 d 1,0(m) MF = 200 + 120 - 160 + (150 2)i N.m 163,3 (F4.34) • Faor : 3i - 2j • Fe. : 200 + 100 + 20i + 100 • Faor : 3 i • Fe. : 600N • MK o: (200i) 2 dFej. Key d 0,6667m • dFoc : MK d 0,6667m (F4.32) • w(x) = 5x w(10) = ±2 ∎ Fa = ∫ from 0 to 10 5x dx = (5x^2)/2 = 50 Fb = ∫ from 0 to 10 5x dx = (5x^2)/2 = 50 • Me = ∫ from 0 to 10 5x dx = (5x^2)/2 = 125 (F4.33) • w(x) = 6x + 3 w(4.5) = 3 ∎ Fa = ∫ from 0 to 4.5 (6x + 3) dx = (6x^2)/2 + 3x = 54.75 Fb = ∫ from 4.5 to 12.5 (6x + 3) dx = (6x^2)/2 + 3x = 112.5 • Me = ∫ from 4.5 to 12.5 (6x + 3) dx = (6x^2)/2 + 3x = 62.25 d = 43.75 / 21 = 2.10