Question

4 of 9 - Revie Part B - Finding the net moment due to two couples The image below shows a beam subject to two couples, Fi = 610 N and F2 = 760 N. (Figure 4) The dimensions are 21 = 1.50 m, 12 = 1.30 m, h 0.14 m, 0 = 47°, and $ = 35° What is the net moment on the beam due to the two couples? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) 'HA ~ o a ? Mc = Value N•m Submit Previous Answers Request Answer * Incorrect; Try Again; 3 attempts remaining

Answer 1

sie- zine E ROLE Given X=1.5m 82=1.3m harum 0347°, $ = 35º, Fi = 610N, F2 = 760N At point A isingolo se ensinot 4729996+ Fi Coso moment at fixed point (let's say c) due to vertical components = F2 Cos d + Ficoso )*82 = 1350-14 Nm (Anti Clock cuise) moment at Pt. A due to horizontal components = fisino-f2sing ) 2 7 .710 Nm C Anti Clocke wise

At pt. B Ficaso + Fi (oso KhY27 - Frolante fisino e nsing moment at Ptic due to vertical component officos@+ F2 Cos b)x(43+372) = 2908.0087 Nm .. (Clockwise Moment at Ptic due to horizontal components - = Fisince - fzsing SX & =1714 (AntiClock wise) & Net moment at Pt. c {Assuming clockinise tve) = -1350.14-7144290810087 .-.714 = 1556.440 Nm