Physics, 03.07.2019 04:30, asamuels216

During a test of a metal a bar it was found that an axial tensile force of 10,000 lb resulted in an elongation of 0.023 inches. the bar had original dimensions: length = 10.000 in, diameter 0.750 in. compute the modulus of elasticity, and predict the material. clearly explain your reasoning

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Mathematics, 23.06.2019 08:00, wcjackie813

The results of a tensile test are shown in table. the test was per- formed on a metal specimen with a circular cross section. the diameter was s inch and the gage length (the length over which the elongation is measured) was 2 inches a. use the data in table to produce a table of stress and strain values b. plot the stress-strain data and draw a best-fit curve. c. compute the modulus of elasticity from the initial slope of the curve. d. estimate the vield stress table: i. load (lb) | 0 550 1100 1700 2200 2800 3300 3900 4400 4900 4970 5025ii. elongation x 10^6 (in.) | 0 350 700 900 1350 1760 2200 2460 2860 3800 5300 7800

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Physics, 21.09.2019 05:10, angelnjones42

To understand the meaning of young's modulus and to perform some real-life calculations related to the stretching of steel.hooke's law states that for springs and other "elastic" objectsf=kδx,where f is the magnitude of the stretching force, δxis the corresponding elongation of the spring from equilibrium, and k is a constant that depends on the geometry and the material of the spring. if the deformations are small enough, most materials, in fact, behave like springs: their deformation is directly proportional to the external force. therefore, it may be useful to operate with an expression that is similar to hooke's law but describes the properties of various materials, as opposed to objects such as springs.consider, for instance, a bar of initial length l and cross-sectional area a stressed by a force of magnitude f. as a result, the bar stretches by δl. (figure 1)let us define two new terms: tensile stress is the ratio of the stretching force to the cross-sectional area: stress=fa.tensile strain is the ratio of the elongation of the rod to the initial length of the bar: strain=δll.it turns out that the ratio of the tensile stress to the tensile strain is a constant as long as the tensile stress is not too large. that constant, which is an inherent property of a material, is called young's modulus and is given byy=f/aδl/l.part awhat is the si unit of young's modulus? part bconsider a metal bar of initial length l and cross-sectional area a. the young's modulus of the material of the bar is y. find the "spring constant" k of such a bar for low values of tensile strain.express your answer in terms of y, l, and a.k =

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