Help Save & Exit S Archimedes, when asked by King Hiero if the new crown was pure gold (SG = 19.3), found the crown weight in air to be 24.5 N and in water to be 19.5 N. Was it gold? Yes or No No Yes
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- Choose the correct answer A stone weighs 450 N in air and 200 N in water. Compute the volume of stone. a-.025 m3 b-.05 m3 c-.075 m3 d-None of the mentioned w-Other:The compound bar containing steel bronze and aluminum segments carries the axial loads shown in the figure. The properties of the segments are listed in the table. Determine the maximum allowable value of P in pounds if the change in length of the entire bar is limited to +0.07in. Steel Bronze Aluminm (A) 22,250 B) 26,250 25,250 D) 27,250 A (in²) 0.75 1 0.5 2P Steel 2 ft Bronze 4 ft 5P E (psi) 30000000 12000000 10000000 4P+ Aluminum 3 ft P L (FT) 4 3Size (mm) 0.25 0.149 0.075 0.052 0.02 0.01 0.004 0.001 pan Weight retained (g) 18.96 33.18 45.03 54.51 42.66 11.85 4.74 4.74 21.33 % Retained % Finer
- A stone weight W___N in air , when submerged in water, the stone lost 40% of its weights a-What is the volume of the stone? b-What is the sp. gravity of the stone? Use your last three digits of your ID for the stone weight in air W__N last three digits is 375We would like to increase the yield strength of the bar through cold work. (a) Using the Copper curve, how much cold work is needed to get a yield strength of 300MPa Yield strength (MPa) 800 700 600 500 400 300 200 100 0 10 20 1040 Steel Brass 30 40 50 Percent cold work Copper 60 70 (b) Based on the percent cold work you calculated, what should the final cross-sectional area of the bar be?and show the stress acting on a small element of material at point A of the shaft, and points B and C of the tube. Misan 10.5 These lectare notes may NOT be used, rependuced, or distibuoted in any form without a prior permission from the instructor. Mechanics of Materials: 2019-2020 Dr. Mustafa Chasib Jasim University of Misan College of Engineering/Department of Civil Engineering Assignment Problem 10.1. A steel bar of diameter d = 52 mm is twisted by torques at the ends. The allowable shear stress is 65 MPa. What is the maximum torque that can be applied? Problem 10.2. A stepped steel shaft with diameters d, = 56 mm and d = 52 mm is twisted by torques T, = 2.5 kN.m and T = 1.5 kN.m acting in opposite directions. What is the maximum shear stress? Misan University 10.6 These lecture nntes may NOT he used, rependaced, or distributed in any form without a prinr permiinn from the instractor.
- Ans is - 35.67 lbSITUATION. A stone weighs 7 N when immersed in water and 8 N when immersed in alcohol having a specific gravity of 0.80. Unit weight of water is 9.81 kN/m³. What is the volume of the stone? 5.245 x 10-4 m3 5.097 x 10-4 m3 4.875 x 10-4 m³ 5.875 x 10-4 m3 PreviousAsap Dont round off initial values, round off in final ans only plz
- What is the flexural stress of a bar of chocolate that has a width of 50mm, a thickness of 0.009m, a length of 95mm, and held a load of 6.9651 N before it broke? * 2.4507 Pa O 2.4507 MPa O 245.0683 Pa 0.2451 MPaa) What is the final length of a 50-mm-long bar of copper, 10 mm in diameter, stressed by a 500-kg mass? What is the final diameter of the copper? Ecu = 115 GPa, v=0.34 b) If a steel bar of the same diameter has the same force applied to it, how long must it be to extend the same amount as the copper bar in part a? Esteel = 207 GPa, v=0.30Determine value of Re