Engineering Mechanics - Center of Gravity and Centroid

Exercise :: Center of Gravity and Centroid - General Questions

  • Center of Gravity and Centroid - General Questions
6. 

The truss is made from seven members, each having a mass of 6 kg/m. Locate the position (,) of the center of mass. Neglect the mass of the gusset plates at the joints.

A. = 2.36 m, = 1.286 m
B. = 2.33 m, = 1.333 m
C. = 2.43 m, = 1.308 m
D. = 2.79 m, = 1.757 m

Answer: Option C

Explanation:

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7. 

Locate the center of gravity of the volume generated by revolving the shaded area about the z axis. The material is homogeneous.

A. = 2.80 ft
B. = 2.50 ft
C. = 2.67 ft
D. = 3.00 ft

Answer: Option C

Explanation:

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8. 

Locate the center of gravity of the homogeneous "bell-shaped" volume formed by revolving the shaded area about the y axis.

A. = 3.33 ft
B. = 2.80 ft
C. = 3.20 ft
D. = 3.00 ft

Answer: Option A

Explanation:

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9. 

Locate the centroid of the exparabolic segment of area.

A. = -4a/5, = -b/4
B. = -3a/4, = -3b/10
C. = -2a/3, = -b/3
D. = -5a/7, = -3b/8

Answer: Option B

Explanation:

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