A block of wood with uniform horizontal section float in water with 25 cm projecting above the surface. The same block when placed in a body of oil (sp. Gr = 0.80) floats with 20 cm projecting above the oil surface. 2. What is the specific gravity of the wood?
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A block of wood with uniform horizontal section float in water with 25 cm projecting above the surface. The same
block when placed in a body of oil (sp. Gr = 0.80) floats with 20 cm projecting above the oil surface.
2. What is the specific gravity of the wood?
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- A block of wood with length "h" and cross-sectional area "A" is submerged in water with 50 mm exposed above the water surface. When submerged in a liquid with a specific gravity of 1.35, it will float with 75 mm exposed above the liquid surface. 3. Obtain the specific gravity of the wood. a. 0.659 b. 0.524 4. Obtain the length of the wood. a. 163.2 b. 124.8 c. 0.956 c. 132.1 d. 0.752 c. 10.50 m² d. 146.4 5. A block of wood is 20 mm thick is floating in seawater. The specific gravity of wood is 0.65 while that of seawater is 1.03. Find the area of a block of wood, which will just support a man weighing 80 kg when the top surface is just at the water surface. a. 13.73 m² b. 14.43 m² d. 9.36 m²A wood cone, 700 mm diameter and 1,000 mm high floats in water with its vertex down. The specific gravity of the wood is 0.60. What is the area of the waterline section?A piece of wood floats in water with 15cm projecting above the water surface. When placed in oil, the block projects 10cm above the oil surface. Calculate the height of the wood. O 0.20 m O 0.35 m O 0.16 m O 0.25 m
- A pine wood specimen was prepared with actual dimensions of 50 mmx50 mm x 250 mm and grain parallel to its length. The deformation was measured over a gauge length of 200 mm. The specimen was subjected to compression parallel to the grain failure. The load- deformation results are shown in table below: Load (kN) Deformation (mm) 8.9 0.457 17.8 0.597 26.7 0.724 34.5 0.838 43 0.965 52.9 1.118 62.01 1.27 71.03 1.422 80.1 1.588 89 1.765 99.6 1.956 108 2.159 111.3 2.311 112 2.456 a. Using a computer spreadsheet program, plot the stress-strain relationship. b. Calculate the modulus of elasticity. С. What is the failure stress?The wood has an allowable normal stress of Oallow = 15 MPa and an allowable shear stress of Tallow = 1.33 MPa. (Figure 1) Part A Determine the minimum dimension h of the beam's cross section to safely support the load. Express your answer to three significant figures and include the appropriate units. µA ? h = Value Units Submit Request Answer Figure Provide Feedback 25 kN/m B 2 m 100 mmThe grains of wood in the board make an angle of 20° with the horizontal as shown. The board is subjected to an axial load of P = 300 N. (Figure 1) Part A Determine the normal stress that acts perpendicular to the grains. Express your answer to three significant figures and include the appropriate units. µA Value Units Submit Request Answer Figure < 1 of 1 Part B Determine the shear stress that acts parallel to the grains. Express your answer to three significant figures and include the appropriate units. HA -300 mm 160 mm Ta'y = Value Units 20° 25 mm1 Submit Request Answer
- Two pieces of wood are glued together, find the maximum load which the glued wood could carry that must not exceed 12 MPa normal stress and 7 MPa shear stress. P 30° P 100 mm Glued Section 100 mmc) Discuss the non-isotropic characteristics of wood.A pair of wood components having a dimension of 100mm X 100mm is joined by means of glue as shown. Determine the maximum axial load F, that most nearly can be subject to the woodpost without exceeding a maximum shear stress of 1650 KPa parallel to the cross section in kN.
- Question 33 The free water bound water is first removed when wood is dried.Figure C a 1 of 1 Part A Locate the centroid y of the composite area. Set a = 8 mm, b = 28 mm, d = 21 mm h = 44 mm. (Figure 1) Express your answer with the appropriate units. IU II Submit Part B IT' μÅ = Value Request Answer Determine the moment of inertia of this area about the centroidal x' axis. Express your answer with the appropriate units. μÅ Units Value ? Units ? "Compute for the Modulus of Elasticity of the Wood if the Clear Span Length is 2300 mm, applied load is 10lbs and the deflection of the wood is about 16.5mm. Moment of Inertia of the wood is 2.75x105 mm^4 a. 2.59 GPa b. 2.74 GPa c. 2.63 GPa d. 2.49 GPa