Question

130 in Problem 8.1 A precast concrete wall section is temporarily held by two cables as shown. Knowing that the tension in cable BD is 200 lb, determine the moment about point of the force exerted by the cable at B. 60 in Problem 8.2 A 2-m-long fishing rod AB is securely anchored in the sand of a beach. After a fish takes the bait the resulting force in the line is 30 N. Deter- mine the perpendicular distance from point A to a line drawn through points B and C. 36 in. Problem 8.3 A crate is supported by three cables as shown. Determine the angle formed by cables AC and AD.

Do 8.3 plx

Answer 1

ANSWER:
Al0,-60,0) B(0,0,32) D(40,0,-21) TAc = Coitbajt32 klin (Jacl=1 607392 - 3600 +1024 - 4624 68 in STAO:(40i+6aj-27K)in Istapl: 146246024272 - 1600436004729 - 5929. 271 im cose (TAC) (STAD) VallMAD) COSA - (60j +32 k). (401 460)-27k) (68) (77) C038 60(60) - 32(27) 68x47 3600 - 864 Scanned with CamScanner 5236.

COSO: 2136 5236 COSO- 0.5225 O: Cog(05225) 0-5850 Scanned with CamScanner