1 Question 2(a):2 A steel surveyor's tape is to be used to measure the length of a line. The tape has a rectangularsection of 2 cm by 0.5 cm and a length of 100 cm when 7, and the tension or pull34 on the tape is AA N. Determine the true length of the line if the tape shows the reading to be5 BB cm when used with a pull of CC N at Te ground on which it is placed is flat.67Take:8°CT₁ =55PP9T₂85°C=10AA =20N2 cm11BB =463.2cm12CC=35N0.5 cm1312010)/°C14=200 G Pa151617 Solution:18cm1920cm2122L=463.2 +cm Ans2324 Question 2(b):25 Three bars each made of different materials are connected together and placed between two26 walls when the temperature is T. Determine the force exerted on the rigid supports when27 the temperature becomes T . The material properties and cross-sectional area of each28 bar are given in the figure.SteelBrass29E 200 GPa30 Take:Ebr12(10-)/°C abr100 GPa21(106)/CCopperEu = 120 GPacu = 17(10)/CAcu - 515 mm²31°C12T₁ =450 mm²3213A₁ = 200 mm² AbrT₂ =33295A =34A mm.-200 mm100 mm35 Solution:36(+)0 = 6₂ -6,370=1 (12)(10) A+1 (21)(10)(0.2)+ 1(17) (10)(0.1)...38AF0.2F0.1F39200(10)2001) 450 (10100(10) 51510 120 (10)40N4142434445464748δ =α ΔTL=PLAE°Cmm11

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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 7, 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 with a pull of CC N at T, e ground on which it is placed is flat. Take: T₁ = 55 °C P P T₂ = °C AA = 20 N 2 cm BB= 463.2 cm CC= 35 N 0.5 cm a = 1200)/°C E- 200 G Pa 8, -aDTL= PL AE Jcm Ans Solution: 85 L= 463.2 cm cm + 11

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 7, 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 with a pull of CC N at T, e ground on which it is placed is flat. Take: T₁ = 55 °C P P T₂ = °C AA = 20 N 2 cm BB= 463.2 cm CC= 35 N 0.5 cm a = 1200)/°C E- 200 G Pa 8, -aDTL= PL AE Jcm Ans Solution: 85 L= 463.2 cm cm + 11

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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