A steel tape is 100m. long at a temp of 20°C and a pull of 10kg. It was used to measure a distance of 624.95m. at a temp. of 32°C with an applied pull of 15kg. during measurement with the tape supported at midspan coefficient of thermal expansion is 0.0000116 /°C and a modulus of elasticity of 2 x 106 kg/cm2. Weight of tape is 0.04kg/m. and a cross sectional area of 0.06cm?. A. Compute the sag correction B. Compute the total correction for tension, sag and temperature. C. Compute the corrected length of the line by applying the combined corrections for tension, sag and temperature.

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The shown circular bar is fixed to the left wall. It has a diameter of 0.5 in and length of 60 in at 50 °F when it is unloaded. There is a gap of 0.08 inches between the bar end and the right opposite wall. The bar was simultaneously loaded axially with a load P and heated such that the temperature was raised from 50 °F to 130 °F along all the bars. The bar material has a modulus of elasticity = 15 x 10° psi and coefficient of thermal expansion = 10.6x106 1/°F. Determine the maximum magnitude of the load P such that the right opposite wall remains stress free.

A steel rod with cross- sectional area of 150 sq.mm. is stretched between two fixed points. The tensile load at 20 degrees Celsius is 5000N. Assume thermal coefficient = 11.7mm/cm-C and E=200 GPa. a. What will be the stress at-20 degrees celcius? b. At what temperature will the stress be zero?

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A rigid horizontal slab is attached to two identical copper rods. There is a gap, A = 0.18 mm between the middle bar, which is made of aluminium and the slab. Neglecting the mass of slab, calculate the stress in each rod when temperature of the whole assembly is increased by 85°C and choose the correct options. Use the following data: A(mm) arC) E(GPa) Each copper rod 500 16.8 x 10 120 Aluminium rod 400 23.1 x 10 70 750 mm A Finally, copper will be under tension. Correct Option B Both copper and aluminium will be free i.e. without any stress. Stress in copper will be 6.69 MPa (Magnitude wise) Correct Option Stress in aluminium will be 16.7 MPa (Magnitude wise) Correct Option Coppe Aluminium Coppe

The acrylic plastic rod is 200 mm long and 15 mm in diameter. If an axial load of 400 N is applied to it, determine the change in its length and the change in its diameter. E = 3.20 GPa, v = 0.4. %3D 400 N 400 N 200 mm

A 4.8ft-long steel wire of 1/4in-diameter is subjected to a 750lb-Tensile load. Knowing that E=29x10^6psi, determine (a) the elongation of the wire, and (b) the corresponding normal stress.

A steel pipe having a length of 3 ft, an outside diameter of 5 in., and a wall thickness of 1/2 in. is subjected to an axial compression of 50,000 lb. Assuming a modulus of elasticity of 30 * 106 psi and a Poisson’s ratio of 0.27, finda. the shortening of the pipe,b. the increase in the outside diameter, andc. the increase in the wall thickness.

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