A steel surveyor's tape is to be used to measure the length of a line. The tape has a rectangular cross section of 0.05 in. by 0.2 in, and a length of 100 ft when the temperature is T₁ = 60 deg F and the tension or pull on the tape is 20 lb. Determine the true length of the line if the tape shows the reading to be 463.25 ft when used with a pull of 35 lb at a temperature of T2 = 90 deg F. The ground on which it is placed is flat. ast = 9.60(10-6)/°F, Est = 29,000 ksi. P 0.2 in. 0.05 in. P

A steel surveyor's tape is to be used to measure the length of a line. The tape has a rectangular cross section of 0.05 in. by 0.2 in, and a length of 100 ft when the temperature is T₁ = 60 deg F and the tension or pull on the tape is 20 lb. Determine the true length of the line if the tape shows the reading to be 463.25 ft when used with a pull of 35 lb at a temperature of T2 = 90 deg F. The ground on which it is placed is flat. ast = 9.60(10-6)/°F, Est = 29,000 ksi. P 0.2 in. 0.05 in. P

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter6: Beams And Cables

Section: Chapter Questions

Problem 6.75P: The end of a water hose weighing 0.5 lb/ft is pulled with a 40-lb force that is inclined at 14 to...

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Question 2(a) : A steel surveyor's tape is to be used to measure the length of a line. The tape has a rectangular section of 2 cm by 0.5 cm and a length of 100 cm when T, and the tension or pull on the tape is AA N. Determine the true length of the line if the tape shows the reading to be BB cm when used v Formula Bar N at T,The ground on which it is placed is flat. Take: T = 63 °C P P 93 °C T, АА - 20 N 2 ст BB = 463.28 ст СС - 35 N 0.5 ст 12(10*)/°C -6 Et 200 GPa Solution : 8, = Ξα ΔΤL= cm PL 8 = AE Page 1 ст L = 463.28 + cm Ans Question 2(b) : Three bars each made of different materials are connected together and placed between two walls when the temperature is T . Determine the force exerted on the rigid supports when the temperature becomes bar are given in the figure. T, . The material properties and cross-sectional area of each Steel Brass Сорper Est = 200 GPa ast = 12(10¬)/°C _@br = 21(10¬6)/°C acu = Epr = 100 GPa Take : Ecu = 120 GPa 17(10-6)/°C T = 12 °C Acu = 515 mm² 21 °C…
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