Questions from Mechanics

Q: A plastic-lined steel pipe has the cross- sectional shape

A plastic-lined steel pipe has the cross- sectional shape shown in the figure. The steel pipe has an outer diameter d3 = 100 mm and an inner diameter d2 = 94 mm. The plastic liner has an inner diamete...

Q: The cross section of a sandwich beam consisting of aluminum alloy faces

The cross section of a sandwich beam consisting of aluminum alloy faces and a foam core is shown in the figure. The width b of the beam is 8.0 in., the thickness t of the faces is 0.25 in., and the he...

Q: The cross section of a sandwich beam consisting of fiberglass faces and

The cross section of a sandwich beam consisting of fiberglass faces and a lightweight plastic core is shown in the figure. The width b of the beam is 50 mm, the thickness t of the faces is 4 mm, and t...

Q: A bimetallic beam used in a temperature- control switch consists of

A bimetallic beam used in a temperature- control switch consists of strips of aluminum and copper bonded together as shown in the figure, which is a cross-sectional view. The width of the beam is 1.0...

Q: A simply supported composite beam 3 m long carries a uniformly distributed

A simply supported composite beam 3 m long carries a uniformly distributed load of intensity q = 30 kN/m (see figure). The beam is constructed of a wood member, 100 mm wide by 150 mm deep, and is rein...

Q: Wide-flange shape, W8 × 28; V = 10

Wide-flange shape, W8 × 28; V = 10 k. Data for Problem 3: A wide-flange beam (see figure) is subjected to a shear force V. Using the dimensions of the cross section, calculate the momen...

Q: A simply supported wooden I-beam with a 12-ft

A simply supported wooden I-beam with a 12-ft span supports a distributed load of intensity q = 90 lb/ft over its length (see figure part a). The beam is constructed with a web of Douglas-fir plywood...

Q: A simply supported composite beam with a 3.6 m span

A simply supported composite beam with a 3.6 m span supports a triangularly distributed load of peak intensity q0 at mid-span (see figure part a). The beam is constructed of two wood joists, each 50 m...

Q: A composite beam is constructed from a wood beam (3 in

A composite beam is constructed from a wood beam (3 in. × 6 in.) and a steel plate (3 in. wide). The wood and the steel are securely fastened to act as a single beam. The beam is subjecte...

Q: A wood beam in a historic theater is reinforced with two angle

A wood beam in a historic theater is reinforced with two angle sections at the outside lower corners (see figure). If the allowable stress in the wood is 12 MPa and that in the steel is 140 MPa, what...