Engineering Mechanics - Moments of Inertia

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Exercise :: Moments of Inertia - General Questions

  • Moments of Inertia - General Questions
1. 

Determine the radius of gyration ky of the parabolic area.

A. ky = 76.5 mm
B. ky = 17.89 mm
C. ky = 78.6 mm
D. ky = 28.3 mm

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

2. 

Determine the inertia of the parabolic area about the x axis.

A. Ix = 11,430 in.4
B. Ix = 32,800 in.4
C. Ix = 13,330 in.4
D. Ix = 21,300 in.4

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

3. 

The composite cross section for the column consists of two cover plates riveted to two channels. Determine the radius of gyration k with respect to the centroidal axis. Each channel has a cross-sectional area of Ac = 11.8 in.2 and moment of inertia (I )c = 349 in.4.

A. k = 7.74 in.
B. k = 6.29 in.
C. k = 5.44 in.
D. k = 4.25 in.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

4. 

The irregular area has a moment of inertia about the AA axis of 35 (106) mm4. If the total area is 12.0(103) mm2, determine the moment of inertia if the area about the BB axis. The DD axis passes through the centroid C of the area.

A. IBB = 5.00(106 ) mm4
B. IBB = 17.00(106 ) mm4
C. IBB = 16.80(106 ) mm4
D. IBB = 55.4(106 ) mm4

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.


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