answer number 1. write your solution in any paper
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- A fluid (sp. gr. = 0.9, u= 1.2 Pa-s) flows in a laminar state between two stationary parallel plates set 4 cm apart. If the steady discharge is 800 cm3/s per cm width of plates, the shear stress at distance 1 cm from either boundary is.Two solid cylindrical rods support a load of P = 33 kN as shown. Rod (1) has a diameter of 15 mm, and the diameter of rod (2) is 12 mm. Determine the axial stress in rod (1). 5.6 m 3.8 m (1) O 141.7 MPa O 151.8 MPa O 175.0 MPa O 192.0 MPa O 208.6 MPa B P 4.6 m (2) C 3.3 m5. Compute the magnitude of the resultant force on the indicated area and the location of the centre of pressure as shown in Figure 5. Show the resultant force on its location. 0.80 m 0.5 m Semicircular hatch 1.50-m diameter Turpentine sg =0,88 70 Figure 5: A Tank
- 2 Points Question 14 of 15 The cross-sectional area of a column is in the shape of two concentric circles whose outer diameter is 200 mm. If it is to be subjected to a force of 75 kN, find the thickness of the wall if the ultimate stress capacity is 32 MPa. Use FS = 3.2 Select the correct response: 12.57 mm 17.75 mm 12.75 mm 15.75 mm rs ionQ.5 The velocity distribution for flow over a plate is given by U=2y-y² in which u is the velocity in ms¹ at a distance y metres from the plate. Determine the shear stress in Nm-2 at the boundary and at 0.2 m from it. Dynamic viscosity of fluid is 0.9 Ns/m².N-S 2 A flow of a viscous fluid with µ = 1.0 μ has a velocity distribution given by u = 0.9y - y². The shear stress at y = 0.45 m is 2 (a) 0.90 N/m² (c) Zero m (b) ∞ (d) - 0.90 N/m²
- H.W.3: Two solid cylindrical rods support a load of P = 27 kN, as shown in Figure 1 Rod (1) has a diameter of 16 mm, and the diam- eter of rod (2) is 12 mm. Determine the axial normal stress in each rod. iad Nadrom Shu 3.2 m (1) 4.0 m 2.3 m BA quarter-circular gate with a width of 3 m contains layered fluids as shown. The gate is supported by a hinge at A and a stopper at B which offers horizontal resistance only. S.G. 0.80 2.6 m А S.G. 1.25 3.2 m B Determine the magnitude, direction, and location (from A) of the horizontal force exerted by the fluids on the gate. b. Determine the magnitude, direction, and location (from A) of the vertical force exerted by the fluids on the gate. c. Calculate the reactions at the hinge at A and at the stopper at B. a.16. A cylindrical pressure vessel has an inner diameter of 4 ft and a thickness of 1/2 inch. Determine the maximum internal pressure it can sustin so that neither its circumferential for its longitudinal stress component exceeds 20 ksi. 0.417 D. 833ps B. 1666 3 A. 200 psi
- PROBLEM3: Assume that the mass and stiffness of the system of Fig3 are: m = 1000 kg , k = 1000 kN/m, and that it is undamped. If the initial displacement is u(0) = 4cm, and the displacement at t = 1.2sec is also 4cm, determine: (a) the displacement at t = 2.4sec (b) the amplitude of free vibration uo [1 ooooo k m -v(t) p(t) fø(1) fs(1) fr(1) - v(t) p(1) (a) (b) Figure 3-Idealized SDOF system: (a) basic components; (b) forces in equilibrium41 O O On vo 11:14 Torsion Part 1.pdf → H.W.1: A solid circular steel shaft having an outside diameter of d= 0.75 in. is subjected to a pure torque of T = 650 lb-in. Deter- mine the maximum shear stress in the shaft. H.W.2: A hollow aluminum shaft with an outside diameter of 80 mm and a wall thickness of 5 mm has an allowable shear stress of 75 MPa. Determine the maximum torque T that may be applied to the shaft. H.W.3: A hollow steel shaft with an outside diameter of 100 mm and a wall thickness of 10 mm is subjected to a pure torque of T= 5,500 N-m. (a) Determine the maximum shear stress in the hollow shaft. (b) Determine the minimum diameter of a solid steel shaft for which the maximum shear stress is the same as in part (a) for the same torque T. 26 H.W.4:A solid 0.75-in.-diameter shaft is subjected to the torques shown in Figure freely. - The bearings shown allow the shaft to turn (a) Plot a torque diagram showing the internal torque in segments (1), (2), and (3) of the shaft. Use…A vertical propane tank with an outside diameter of D=300 mm and a wall-thickness of t=14 mm is subjected to a horizontal force of F = 41 kN. The gage pressure inside the tank is 6 MPa. [D=300 mm, t=14 mm, F=41 kN, h = 1 m] h Determine the maximum normal stress at point K. 66.5 MPa 97.5 MPa 23.6 MPa 59.7 MPa 82.8 MPa Correct answer: 59.7 MPa