25 in. 15 in. Fig. P2.39 6 kips A -1.25 in. 6 kips B -2 in. C 2.39 A polystyrene rod consisting of two cylindrical portions AB and BC is restrained at both ends and supports two 6-kip loads as shown. Knowing that E = 0.45 × 10 psi, determine (a) the reac- tions at A and C, (b) the normal stress in each portion of the rod. 2.40 Three steel rods (E = 29 × 105 psi) support an 8.5-kip load P. Each of the rods AB and CD has a 0.32-in² cross-sectional area and rod EF has a 1-in² cross-sectional area. Neglecting the defor- mation of bar BED, determine (a) the change in length of rod EF, (b) the stress in each rod.

25 in. 15 in. Fig. P2.39 6 kips A -1.25 in. 6 kips B -2 in. C 2.39 A polystyrene rod consisting of two cylindrical portions AB and BC is restrained at both ends and supports two 6-kip loads as shown. Knowing that E = 0.45 × 10 psi, determine (a) the reac- tions at A and C, (b) the normal stress in each portion of the rod. 2.40 Three steel rods (E = 29 × 105 psi) support an 8.5-kip load P. Each of the rods AB and CD has a 0.32-in² cross-sectional area and rod EF has a 1-in² cross-sectional area. Neglecting the defor- mation of bar BED, determine (a) the change in length of rod EF, (b) the stress in each rod.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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