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The 90-kg man, whose center of gravity is at G, is climbing a uniform ladder. The length of the ladder is 5 m, and its mass is 20 kg. Friction may be neglected.
(a) Compute the magnitudes of the reactions at A and B for x = 1.5 m.
(b) Find the distance x for which the ladder will be ready to fall.
How does the fracture process or propagation occur in a polymer like PVC, a fibre reinforced polymer like GFRP, a metal like high strength steel, and a typical concrete? Which case is closest to LEFM?
Consider the elevated temperature crack growth characteristics of ceramics in which glassy films at grain boundaries undergo viscous deformation at high temperature.
4. Determine the values for the Energy Grade Line and the Hydraulic Grade Line for the tank and pipe system of problem 3. Plot the EGL and HGL.
Create a graph with the x-axis as p, p' and the y-axis as q. Calculate and plot the initial mean effective stress and deviatoric stress
The dimensionless henry's constant for TCE at 25 degrees celsius is 0.4. A sealed glass vial is prepared that has an air volum of 4mL overlying an aquesous volume of 36mL. TCE is added to the aqueous phase so that initally
Design the temperature reinforcement, tie bars, and dowel bars for a highway concrete pavement with 13 inch slabs, f'c=3500 psi, traverse joints at 35 ft apar,t and with 3 12 ft lanes each way. Use grade 60 steel (k=200 pci). SF>=1.5
Reconsider Prob. 12-16. Using EES (or other) software, verify the validity of the last Maxwell relation for refrigerant-134a at the specified state.
Refrigerant 134a enters the condenser of a residential heat pump at 800 kPa and 35 degrees celcius at a rate of 0.018 kg/s and leaves at 800 kPa as a saturated liquid. If the compressor consumes 1.2 kW of power, determine a) the COP of the heat pump ..
Maintenance expenses for a bridge in Georgia are estimated to be $200,000 for the first eight years followed by two separate million dollar expenditures in years 12 and 18. The expected life of the bridge is thirty years.
A continuous geogrid having a reinforcement coverage ratio equal to 100 percent. A continuous metallic grid consisting of W4 bars having a diameter equal to 5.7 mm, a distance between longitudinal bars equal to 150 mm, a distance between transvers..
A rubber ball is inflated to a pressure of 65 kPa .At that pressure the diameter of the ball is 240mm and the wall thickness is 1.25 mm.The rubber has a modulus of elasticity E of 3.6 Mpa and a poisoon'd ratio of 0.48.
According to the CAT Manual, the CAT 785D truck is a front-drive truck that has an empty weight of 256,849 lbs, heaped volume of 102 CY, and a target payload of 157 tons. The weight is shown below. The CAT 785D’s maneuver (in loading and dumping area..
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