Homework Answers
The work done in the stress of wire per volume is given by-
u=1/2stress*strain
which is nothing but the area under the curve.
hence the total work done is
U= u*volume
but volume is
V=AL
hence the work done is
AL*(area under the curve)
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Figure shows the stress versus strain plot for a material that is stretched by a machine...
Figure shows the stress versus strain plot for a material that is stretched by a machine...
Figure shows the stress versus strain plot for a material that is stretched by a machine pulling in opposite directions at the two ends of the wire. The wire has an initial length of Lin meter and an initial cross-sectional area of A in meter-square. How much work does the force from the machine do on the wire to produce the strain? stress strain Select one: O AL/(area under stress versus strain graph) o Ax(area under stress versus strain graph)/L...
The figure shows an approximate plot of stress versus strain for a spider-web thread, out to...
The figure shows an approximate plot of stress versus strain for
a spider-web thread, out to the point of breaking at a strain of
2.25. The vertical axis scale is set by a = 0.130
GN/m2,b = 0.500 GN/m2, and
c = 0.720 GN/m2. Assume that the thread has an
initial length of 0.840 cm, an initial cross-sectional area of 4.00
× 10-12 m2, and (during stretching) a
constant volume. The strain on the thread is the ratio of the...
Question 4 1 pts A wire made from a composite material is shaped into a cylinder...
Question 4 1 pts A wire made from a composite material is shaped into a cylinder and is stretched by a machine pulling in opposite directions at the two ends of the wire. The wire has an initial length of 1.20 m and an initial cross-sectional area of 9.00 x 10-6m2. If a force of 450 N stretches it by 2.1 mm and the wire returns to its original shape after being stretched, what is the Young's Modulus of the...
Figure (a) shows the stress strain relations for two different materials, A and B. Between A...
Figure (a) shows the stress strain relations for two different materials, A and B. Between A and B, which one has higher strength? stress B strain Figure (a) O A. Material A OB. Material B Figure (a) shows the stress strain relations for two different materials, A and B. Figure (b) is a schematic of the catastrophic failure of a Liberty ship. Between A and B. which material could have been used in construction of the ship and caused this...
Figure < 1 of 1 Consider, for instance, a bar of initial length L and cross-sectional...
Figure < 1 of 1 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 AL (Figure 1) Let us define two new terms: • Tensile stress is the ratio of the stretching force to the cross-sectional area: stress = 5 • Tensile strain is the ratio of the elongation of the rod to the initial length of the bar strain= 41 It...
The figure shows the stress-strain curve for a material. The scale of the stress axis is...
The figure shows the stress-strain curve for a material. The scale of the stress axis is set by s = 330, in units of 106 N/m^2. What are (a) the Young's modulus and (b) the approximate yield strength for this material? (a) Number Units (b) Number Units
A wire of unknown material with a cross-sectional area of 1 mm^2 and an unstretched length...
A wire of unknown material with a cross-sectional area of 1 mm^2 and an unstretched length of 0.5 m is stretched through the application of known forces. From the plot of force as a function of Delta L in the figure, the Young's modulus of the material is: A. 4 times 10^10 N/m^2 B. 80 N/m^2 C. 40 N/m^2 D. 8 times 10^10 N/m^2 E. none of the above
5. EVALUATION I. Create a stress-strain diagram for the measured values in table 1 and identify...
5. EVALUATION I. Create a stress-strain diagram for the measured values in table 1 and identify the mechanical properties of the material. (4 marks) II. Identify the following and label them in the graph. (12 marks) • Young's modulus Yield strength Elongation Ultimate tensile strength THEORETICAL BACKGROUND Equations: Cross-sectional Area (A) Modulus of Elasticity (E) Tensile Strength (ST) Percent Elongation (%EL) d? E = Sy Ey Sr Pu А %EL Extension at fracture Gauge Length Where: A: Cross- Sectional Area...
Please give a full, detailed, worded explanation. Thank you :))) S. Draw a possible stress strain...
Please give a full, detailed, worded explanation. Thank you :)))
S. Draw a possible stress strain graph for a material with a yield stress of 300 MPa, an elastic modulus of 200 GPa, a UTS of 450 MPa and a ductility of 20%. Calculate the elastic strain at the point where the material starts to plastically deform. 6. A nylon rope with an elastic modulus of 3 GPa is placed under a force of 17.5 kN. The cross-sectional area of...
Considering the figure below, which curve shows the brittle material? stress strain Green ОО Red
Considering the figure below, which curve shows the brittle material? stress strain Green ОО Red
Figure shows the stress versus strain plot for a material that is stretched by a machine pulling in opposite directions at the two ends of the wire. The wire has an initial length of Lin meter and an initial cross-sectional area of A in meter-square. How much work does the force from the machine do on the wire to produce the strain? stress strain Select one: O AL/(area under stress versus strain graph) o Ax(area under stress versus strain graph)/L...
The figure shows an approximate plot of stress versus strain for
a spider-web thread, out to the point of breaking at a strain of
2.25. The vertical axis scale is set by a = 0.130
GN/m2,b = 0.500 GN/m2, and
c = 0.720 GN/m2. Assume that the thread has an
initial length of 0.840 cm, an initial cross-sectional area of 4.00
× 10-12 m2, and (during stretching) a
constant volume. The strain on the thread is the ratio of the...
Question 4 1 pts A wire made from a composite material is shaped into a cylinder and is stretched by a machine pulling in opposite directions at the two ends of the wire. The wire has an initial length of 1.20 m and an initial cross-sectional area of 9.00 x 10-6m2. If a force of 450 N stretches it by 2.1 mm and the wire returns to its original shape after being stretched, what is the Young's Modulus of the...
Figure (a) shows the stress strain relations for two different materials, A and B. Between A and B, which one has higher strength? stress B strain Figure (a) O A. Material A OB. Material B Figure (a) shows the stress strain relations for two different materials, A and B. Figure (b) is a schematic of the catastrophic failure of a Liberty ship. Between A and B. which material could have been used in construction of the ship and caused this...
Figure < 1 of 1 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 AL (Figure 1) Let us define two new terms: • Tensile stress is the ratio of the stretching force to the cross-sectional area: stress = 5 • Tensile strain is the ratio of the elongation of the rod to the initial length of the bar strain= 41 It...
The figure shows the stress-strain curve for a material. The scale of the stress axis is set by s = 330, in units of 106 N/m^2. What are (a) the Young's modulus and (b) the approximate yield strength for this material? (a) Number Units (b) Number Units
A wire of unknown material with a cross-sectional area of 1 mm^2 and an unstretched length of 0.5 m is stretched through the application of known forces. From the plot of force as a function of Delta L in the figure, the Young's modulus of the material is: A. 4 times 10^10 N/m^2 B. 80 N/m^2 C. 40 N/m^2 D. 8 times 10^10 N/m^2 E. none of the above
5. EVALUATION I. Create a stress-strain diagram for the measured values in table 1 and identify the mechanical properties of the material. (4 marks) II. Identify the following and label them in the graph. (12 marks) • Young's modulus Yield strength Elongation Ultimate tensile strength THEORETICAL BACKGROUND Equations: Cross-sectional Area (A) Modulus of Elasticity (E) Tensile Strength (ST) Percent Elongation (%EL) d? E = Sy Ey Sr Pu А %EL Extension at fracture Gauge Length Where: A: Cross- Sectional Area...
Please give a full, detailed, worded explanation. Thank you :)))
S. Draw a possible stress strain graph for a material with a yield stress of 300 MPa, an elastic modulus of 200 GPa, a UTS of 450 MPa and a ductility of 20%. Calculate the elastic strain at the point where the material starts to plastically deform. 6. A nylon rope with an elastic modulus of 3 GPa is placed under a force of 17.5 kN. The cross-sectional area of...
Considering the figure below, which curve shows the brittle material? stress strain Green ОО Red
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