Question

Problems 18, 19, &20 A 2" by 2” A36 steel rod is loaded axially. B P = 50 kips 30 in. 20 in. Problem 18 Determine the reaction at A. a) RA= 10 kips b) RA = 20 kips c) RA= 30 kips: d) RA= 30 kips e) RA - 40 kips Problem 19 Determine the reaction at B. a) RB - 10 kips b) RB = 20 kips c) RB = 30 kips d) RB = 30 kips e) RB = 40 kips Problem 20 Determine the displacement of B a) 0.0052 in. b) 0.0052 in. c) 0,0086 in. d) 0.0086 in. e) 0.0129 in.

Answer 1

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B 6.-P:50кіРѕ 30 in * Rc 2o in 4 in2 Area = 2"x2" - for A36 Steel ; E = 29,000 ksi now, RA+ Rc - 50- رن 13) RA RA KIRA-SO) (%-5%) с B TAI AAB + ABC - RAX 30 (RA-S) *2 = 0 AE AE -22 RA = (RA -so) x2O <3 PN - 20 1000 - 50 RAS-1000 20 kiPb (→). (b) a 7 RA 49.) from w Re - 50 -- 20 30 kipo (-) (c) 20) displacement of B ALAB 0.0052 In 20% 30 4X29000 in (4) (a) (Piease rate the answez)