A long rectangular copper bar under a tensile load P hangs from a pin that is supported by two steel posts as shown in figure below. The copper bar has a length of 2.0 m, a rectangular cross section of 20 mm x 200 mm, and a modulus of elasticity Ecu = 100 GPa. Each steel post has a height of 0.5 m, a rectangular cross section of 20 mm x 250 mm, and a modulus of elasticity Es = 200 GPa. Steel post A Copper- bar a.) Determine the downward displacement d of the lower end of the copper bar with respect to the base support of the steel post at point A due to a load P = 150 kN. (20 marks) b.) What is the maximum permissible load Pmax if the displacement d is limited to 1.0 mm? (5 marks)
A long rectangular copper bar under a tensile load P hangs from a pin that is supported by two steel posts as shown in figure below. The copper bar has a length of 2.0 m, a rectangular cross section of 20 mm x 200 mm, and a modulus of elasticity Ecu = 100 GPa. Each steel post has a height of 0.5 m, a rectangular cross section of 20 mm x 250 mm, and a modulus of elasticity Es = 200 GPa. Steel post A Copper- bar a.) Determine the downward displacement d of the lower end of the copper bar with respect to the base support of the steel post at point A due to a load P = 150 kN. (20 marks) b.) What is the maximum permissible load Pmax if the displacement d is limited to 1.0 mm? (5 marks)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A long rectangular copper bar under a tensile load P hangs from a pin that is supported by two steel posts
as shown in figure below.
The copper bar has a length of 2.0 m, a rectangular cross section of 20 mm x 200 mm, and a modulus of
elasticity Ecu = 100 GPa.
Each steel post has a height of 0.5 m, a rectangular cross section of 20 mm x 250 mm, and a modulus of
elasticity Es = 200 GPa.
Steel
post
A
Copper
bar
a.) Determine the downward displacement 8 of the lower end of the copper bar with respect to the
base support of the steel post at point A due to a load P = 150 kN.
(20 marks)
b.) What is the maximum permissible load Pmax if the displacement d is limited to 1.0 mm? (5 marks)
таз
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