Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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Find the approximate depression of mercury at 20°C in a capillary tube of diameter 0.5 mm. (Surface tension of mercury at the same temperature is 0.514 N/m, contact angle of mercury and tube is 140°)
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- A 0.35-m long steel rod with a round cross-section (25 mm) is resting on a frictionless surface.The rod temperature is measured to be at 10°C. The plate is then heated uniformly to 97°C.The steel has a coefficient of thermal expansion equal to 1.1*10-5 m/m/°C.a) What is the length of expansion?b) Is there a stress on the rod?c) If the rod is snugly fitted against two immovable non-conducting walls at atemperature of 15°C and the heated uniformly to 115°C, what is its length at 115°C ifthe elastic modulus of steel is 205 GPa, what is the stress induced in the bar? Tensionor compression?arrow_forwardi need the answer quicklyarrow_forwardA single thick-walled cylinder has an inner radius of 100 mm and an outer radius of 155 mm. The cylinder is subjected to an internal pressure of 65 MN /m2 and an external pressure of 25 MN/m2. (b) To increase the FOS to the standards value, another cylinder is shrunk-fitted to make a compound cylinder. When the internal pressure load remains unchanged, the maximum hoop stress in the inner cylinder of the compound cylinder has been found to be reduced by 5% of the original value (i) Calculate the interface pressure at the common radius of the compound cylinder. (ii) Assume the cylinders are made of a copper alloy. Suggest alternative ways to increase the FOS and discuss whether the compound solution is better.arrow_forward
- 1500 KN 800 mm 70 mm d) Determine the new thickness of the bar in mm e) Determine the percentage change in the total volume of the bar 100 mm 1500 KNarrow_forwardQ2: A drop of liguid foluen is kept al uniform temperkure t 299 K and is suspended in air by a fine wire. The initid radius at r= 2mm. The vapor pressure of foluene 299K is f=384 Kfe and the density of liguid toluene is 366 ky Im 3. Derive equation for the time tp for the drop b evupurete Completely in a large volume of still air Calculate the tine in seconds for Complete evaporahion.arrow_forward
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