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the figure shows the skirt of an air cushion vehicle a supply at pressure ps and temperature ts fills the skirt volume
modify the model from problem 12-16 to include the thermal capacitance of the cylinder as well as convection from the
the figure shows a schematic of a proposed variable-rate air spring capable of continuous variation it is installed as
an aluminum cable of 6 mm diameter is suspended from a high-altitude balloon the density of aluminum is 2700 kgm3 and
the 20-mm-diameter bolt fastens two wooden planks together the nut is tightened until the tensile stress in the bolt is
the plate welded to the end of the i-beam is fastened to the support with four 10-mm-diameter bolts two on each side
the halves of the coupling are held together by four 58-in-diameter bolts the working stresses are 12 ksi for shear in
the steel end-cap is fitted into grooves cut in the timber post the working stresses for the post are 18 mpa in shear
a joint is made by gluing two plywood gussets of thickness t to wood boards the tensile working stresses are 1200 psi
the bar ab is supported by a frictionless inclined surface at a and a 78- in-diameter pin at b that is in double shear
find the stresses in members bc and be for the truss shown the crosssectional area of each member is 42 in 2 indicate
1 a 4-mm-diameter steel wire 32 m long carries an axial tensile load p find the maximum safe value of p if the
1 a steel hoop 10 mm thick and 80 mm wide with inside diameter 15000 mm is heated and shrunk onto a steel cylinder
the compound bar carries the axial forces p and 2p find the maximum allowable value of p if the working stresses are 40
the bar abc in fig a consists of two cylindrical segments the material of the bar has the stress-strain diagram shown
the following data were recorded during a tensile test of a 140-mm-diameter mild steel rod the gage length was 500
the steel strip has a uniform thickness of 50 mm compute the elongation of the strip caused by the 500-kn axial force
the steel rod is placed inside the copper tube the length of each being exactly 15 in if the assembly is compressed by
a steel rod having a cross-sectional area of 300 mm2 and a length of 150 m is suspended vertically from one end the rod
the boom ac is a 4-in square steel tube with a wall thickness of 025 in the boom is supported by the 05-in-diameter pin
the flat aluminum bar shown in profile has a constant thickness of 10 mm determine the elongation of the bar caused by
the stepped solid steel shaft abc is attached to rigid supports at each end determine the diameter of segment bc for
the segment ab of the steel torsion bar is a cylindrical tube of constant 2-mm wall thickness segment bc is a square
1 a cylindrical metal tube of mean radius r 5 in length l 14 ft and shear modulus g 11 times 106 psi carries the
a determine the largest torque that can be safely applied to the rectangular steel bar if the maximum shear stress is