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kolbaska11 [484]
3 years ago
6

A column has a 4.8 cm by 8.7 cm rectangular cross section and a height 4 mm . The column is fixed at both ends and has a lateral

support at mid-height for the weak axis. The material has E = 200 GPa and σY = 250 MPa.a. The factor of safety for the column yielding is FS 1.5. What is the maximum load that can be applied based on the column yielding due to the normal stress? Assume the load is applied at the centroid of the section. Express your answer with appropriate units to three significant figures. b. The design is to have a factor of safety for buckling FS 2.5. What is the maximum load based on buckling in the strong axis of the column? Express your answer with appropriate units to three significant figures.
Engineering
1 answer:
Elden [556K]3 years ago
3 0
I’m literally so sorry
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diamong [38]

Answer:

A) Mach number at Inlet;M1 = 0.292

B) amount of heat received;Q_in = 105.59 KJ/kg

Explanation:

A) The formula for the speed of nitrogen at the inlet is;

C1 = √kRT1

Where;

k is a constant = 1.4

R is the gas constant of nitrogen R = 296.8 J/kg.K

T1 is the temperature at inlet = 10°C = 10 + 273 K = 283K

Thus;

C1 = √(1.4 * 296.8 * 283)

C1 = 342.9 m/s

Formula for mach number at inlet is;

M1 = V1/C1

We are given V1 = 100 m/s

Thus; M1 = 100/342.9

M1 = 0.292

B) We are given mach number at exit; M2 = 0.51

Also; V2 = 200 m/s

Thus;M2 = V2/C2

C2 = V2/M2 = 200/0.51

C2 = 392.16 m/s

Now, we know that;

C2 = √kRT2

So, 392.16 = √(1.4 * 296.8 * T2)

392.16² = 415.52*T2

T2 = 392.16²/415.52

T2 = 370.11 K

Now formula for steady flow balance equation is;

Q_in = =cp(T2 -T1) + [(v2)² - (v1)²]/2

Where Q_in is the amount of heat energy received and cp is the specific heat of nitrogen,= 1.040 KJ/kg.K

Plugging in the relevant values;

Q_in = 1.04(370.11 -283) + [(200)² - (100)²]/2](1KJ/Kg/1000m²/s²)

Q_in = 90.59 + 15

Q_in = 105.59 KJ/Kg

5 0
3 years ago
Define volume flow rate Q of air flowing in a duct of area A with average velocity V
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Answer:

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From the attached figure we can see that

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Volume=Area\times V=A\times V

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3 0
3 years ago
A photovoltaic panel of dimension 2m×4m is installed on the
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Answer:

Explanation:

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6 0
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Answer:

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Explanation:

see the attached file

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Answer:

See the detailed answer in attached file.

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Download docx
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