Exercise: Center Of Gravity And Centroid

Questions for: Center Of Gravity And Centroid

Determine the volume of concrete needed to construct the circular curb.

A:
V = 1.083 m3
B:
V = 1.309 m3
C:
V = 1.756 m3
D:
V = 8.67 m3
Answer: A
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Locate the centroid of the shaded area.

A:
= 0.667 m, = 2.40 m
B:
= 0.500 m, = 2.80 m
C:
= 0.800 m, = 2.00 m
D:
= 0.600 m, = 2.60 m
Answer: C
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Determine the distance to the centroid axis of the beam's cross-sectional area. Neglect the size of the corner welds at A and B for the calculation.

A:
= 75.2 mm
B:
= 97.5 mm
C:
= 85.9 mm
D:
= 102.5 mm
Answer: C
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Determine the approximate amount of paint needed to cover the surface of the water storage tank. Assume that a liter of paint covers 2.5 m2. Also, what is the total inside volume of the tank.

A:
27.6 liters of paint, V = 52.6 m3
B:
20.1 liters of paint, V = 50.3 m3
C:
26.4 liters of paint, V = 56.5 m3
D:
25.1 liters of paint, V = 55.0 m3
Answer: C
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