Questions from Mechanics

Q: The horizontal rigid beam ABCD is supported by vertical bars BE and

The horizontal rigid beam ABCD is supported by vertical bars BE and CF and is loaded by vertical forces P1 = 400 kN and P2 = 360 kN acting at points A and D, respectively (see figure). Bars BE and CF...

Q: Two pipe columns (AB, FC) are pin- connected

Two pipe columns (AB, FC) are pin- connected to a rigid beam (BCD), as shown in the figure. Each pipe column has a modulus of E, but heights (L1 or L2) and outer diameters (d1 or d2) are different for...

Q: A framework ABC consists of two rigid bars AB and BC,

A framework ABC consists of two rigid bars AB and BC, each having a length b (see the first part of the figure part a). The bars have pin connections at A, B, and C and are joined by a spring of stiff...

Q: Solve the preceding problem for the following data: b = 8

Solve the preceding problem for the following data: b = 8.0 in., k = 16 lb/in., a = 458, and P = 10 lb. Data from Problem 20: A framework ABC consists of two rigid bars AB and BC, each having a leng...

Q: The length of the end segments of the bar (see figure

The length of the end segments of the bar (see figure) is 20 in. and the length of the prismatic middle segment is 50 in. Also, the diameters at cross sections A, B, C, and D are 0.5, 1.0, 1.0, and 0....

Q: A long, rectangular copper bar under a tensile load P hangs

A long, rectangular copper bar under a tensile load P hangs from a pin that is supported by two steel posts (see figure). The copper bar has a length of 2.0 m, a cross-sectional area of 4800 mm2, and...

Q: A welded steel girder having the cross section shown in the figure

A welded steel girder having the cross section shown in the figure is fabricated of two 300 mm × 25 mm flange plates and a 800 mm × 16 mm web plate. The plates are joined by...

Q: An aluminum bar AD (see figure) has a cross-

An aluminum bar AD (see figure) has a cross-sectional area of 0.40 in2 and is loaded by forces p1 = 1700 lb, p2 = 1200 lb, and p3 = 1300 lb. The lengths of the segments of the bar are a = 60 in, b = 2...

Q: A vertical bar consists of three prismatic segments A1, A2,

A vertical bar consists of three prismatic segments A1, A2, and A3 with cross-sectional areas of 6000 mm2, 5000 mm2, and 4000 mm2, respectively. The bar is made of steel with E = 200 GPa. Calculate th...

Q: A vertical bar is loaded with axial loads at points B,

A vertical bar is loaded with axial loads at points B, C, and D, as shown in the figure. The bar is made of steel with a modulus of elasticity E = 29,000 ksi. The bar has a cross-sectional area of 8.2...