4 in.P3 in.В1200 N3. A bar, show to the right, has a rectangular cross section of3 in. by 4 in. and is fixed to the floor at D, and is loaded withthree forces: PA = 120 kips, PB = 360 kips, and Pc = 540 kips.Determine: (a) the reaction at the floor, RD; specify thedirection ( ↑ or I ), and (b) the normal stresses in each of thethree pieces, AB, BC, and CD; specify tension (T) orcompression (C) for each.Ans: Rp = 300 kips T, oaB = 10 ksi (C), obC = 20 ksi (T),OCD = 25 ksi (C)ВD7 in.6 in.8 in.

To determine the reaction at the floor and the normal stresses in each of the three pieces.

PB 3. A bar, show to the right, has a rectangular cross section of 3 in. by 4 in. and is fixed to the floor at D, and is loaded with three forces: PA = 120 kips, PB = 360 kips, and Pc = 540 kips. Determine: (a) the reaction at the floor, Rp; specify the direction ( ↑ or V ), and (b) the normal stresses in each of the three pieces, AB, BC, and CD; specify tension (T) or compression (C) for each. Ans: Rp = 300 kips T, oAB = 10 ksi (C), oBC = 20 ksi (T), OCD = 25 ksi (C) II %3D

PB 3. A bar, show to the right, has a rectangular cross section of 3 in. by 4 in. and is fixed to the floor at D, and is loaded with three forces: PA = 120 kips, PB = 360 kips, and Pc = 540 kips. Determine: (a) the reaction at the floor, Rp; specify the direction ( ↑ or V ), and (b) the normal stresses in each of the three pieces, AB, BC, and CD; specify tension (T) or compression (C) for each. Ans: Rp = 300 kips T, oAB = 10 ksi (C), oBC = 20 ksi (T), OCD = 25 ksi (C) II %3D

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter1: Tension, Compression, And Shear

Section: Chapter Questions

Problem 1.4.10P: A long re Lai nine: wall is braced by wood shores set at an angle of 30° and supported by concrete...

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