A line was determined to be 2538.45 m when measured with a 45m tape supported throughout its length under a pull of 3.4 kg at a mean temperature of 36⁰C. Tape used is of standard length at 20.2⁰C under pull of 4.1 kg. Cross sectional area of tape is 0.03 cm^2. Coefficient of thermal expansion is 0.0000116/⁰C. Modulus of elasticity of tape is 2.3x10^6kg/cm2 ▪ Determine the error of tape due to change in temperature. ▪ Determine due the error of tension. ▪ Determine the corrected length of the line.

A beam shown below, 200mm wide by 350mm deep, is loaded as shown in figure below. Determine the stress in a fiber 50mm from the top of the beam at point B. sokn B 30 kN/m 20 kn/m 20 km 2m 2m 4m R₁ * D +

A solid plastic rod has a diameter of d = 18 mm and a length of L = 700 mm. An axial load of P = 33 kN is applied to the rod as shown. The elastic modulus is E = 2.0 GPa and Poisson's ratio for this material is v= 0.41. Determine the magnitude of the change in the rod diameter Ad for the given load. Answer: Ad = i mm

A circular nylon [E = 8 GPa; ν = 0.35; α = 29 ×10-6/°C] disk with a circular hole in its center is shown. At an initial temperature of Ti = 22°C, the outer diameter of the disk is D = 210 mm, the diameter of the central hole is d = 55 mm, and the thickness of the disk is t = 24 mm. At a final temperature of Tf = 46°C, determine:(a) the change in diameter Δd of the central hole (assume an increase Δd as positive, otherwise as negative).(b) the change in thickness Δt of the disk (assume an increase Δt as positive, otherwise as negative).(c) the normal strain in the circumferential direction around the outside of the disk.