ome questions are simply conversion and rounding. Use actual conversion factors
ID: 1920387 • Letter: O
Question
ome questions are simply conversion and rounding. Use actual conversion factors and answer all questions to the proper number of significant digits. Other questions are answered using the following problem statement:
A 4.00-cm-diameter, 0.80-m long rod of aluminum 7075-T6 is subjected to an axial tensile force with a factor of safety of 1.75. The yield stress and modulus of elasticity of aluminum 7075-T6 are 500. MPa and 210. GPa, respectively.
Estimate the shaft normal cross sectional area in in2.
Select one:
a. 1.9
b. 1.94
c. 2
d. 1.95
Estimate the shaft normal cross sectional area in m2.
Select one:
a. 0.0126
b. 0.0080
c. 0.00628
d. 0.00126
Estimate the shaft maximum allowable tensile force (KN) using a factor of safety of 1.75.
Select one:
a. 300
b. 359040
c. 285
d. 359
Convert the Modulus of Elasticity of 210 GPa to lb/in2.
Select one:
a. 3.0 X10^7
b. 3.04 x10^7
c. 3.046 x 10^6
d. 3.05 X10^7
Estimate the shaft elongation in millimeters with an applied force of 300KN.
Select one:
a. 0.000909
b. 0.9
c. 0.00126
d. 0.00114
Estimate the shaft strain with an axial force of 300. KN.
Select one:
a. 0.00114
b. 0.00126
c. 0.909
d. 0.349
Explanation / Answer
1.b. 1.94
2.c. 0.00628
3.d. 359
4.b. 3.04 x10^7
5.c. 0.00126
6.a. 0.00114
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