An object weighs in air is 230.7 lb, in water, it weights 177.2 lb. Then its specific gravity is?
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- A structural member with a rectangular cross section as shown in the accompanying figure is used to support a load of 2500 N. What type of material do you recommend be used to carry the load safely? Base your calculations on the yield strength and a factor of safety of 2.0.4. An object is constructed of a material lighter than water. It weighs 50N in air and a force of 10 N is required to hold it under water. What is its density, specific weight, and specific gravity?A cube of dimension L and sp. gr. 0.82 floats horizontally in water. Is the cube stable? Why? Show how.
- A rigid beam of weight W = 800 lb hangs from three equally spaced wires, two of steel and one of aluminum, The diameter of the wires is 1/8 in. Before they are loaded, all three wires had the same length. What temperature increase 47 in all three wires would result in the entire load being carried by the steel wires only? that is, the aluminum wire would become slack. Given that cel = 30 x 10° psi, steel = 6.5 x 10-6/F and A = 12x 10-6/F. aPROBLEM 5: An aluminum wire 3 mm in diameter and 4 m long is used to support a mass of 50 kg. What is the elongation of the wire? Young's modulus for aluminum is 7 x 1010 Pa. b. 4.96 mm d. 3.96 mm a. 6.96 mm c. 5.96 mmProblem 4.4 A body of dimensions 1.5 m x 1.0 m x2 m, weighs 1962 N in water. Find its weight in air. What will be its specific gravity ?
- 2. A cube of material is 4 in. on a side and floats at the interface between kerosene and water, as shown. a. Find the specific gravity of the material. b. How much weight is required to fully submerge the cube under water? Kerosene b/3 Water 2b/3 SAPILA pyramid-shaped piece of steel has a square base measuring 6.8 in. on each side. If the height of the piece is 12.4 in., find the weight of two dozen of these pyramids. Assume that the steel has a density of 0.283 lb/cu in. Round to the nearest hundredth. ?Calculate the stiffness of a homogenous bar having elastic modulus of 200 GPa, length of 2 m, and cross-sectional area of 10 mm?. A 40000 N/mm B 2500 N/mm 1000 N/mm D 1 N/mm
- The cross section of the rim of an iron flywheel 3 ft. In diameter is a rectangle 12" by 3". How much does the rim weigh? Note: Iron weighs 450lb/cu.ft.7. Given the mass of 1.500 Mg and a volume of 2.205 x 10^6 cc, what is the specific gravity? * 0.685 0.675 0.680 0.690 8. The specific gravity of oil is 0.85., what is its specific weight in lb/ft^3? * 55 lb/ft^3 53 lb/ft^3 50 lb/ft^3 45 lb/ft^3 9. Given the specific gravity of oil is 0.85, what is the specific weight in KN/m^3? * 8.385 KN/m^3 8.358 KN/m^3 8.358 KN/m^3 8.353 KN/m^3A stone weighs 280 N in alcohol (SG = 0.80) and 220 N in glycerin (SG = 1.25). What is the volume of the stone in cm³? Note that the apparent weight of an object that is fully submerged in a liquid is equal to its weight in air (or simply, its weight) minus the buoyant force. Answer: