Engineering Mechanics - Center of Gravity and Centroid - Discussion
Discussion Forum : Center of Gravity and Centroid - General Questions (Q.No. 4)
4.
Determine the volume of concrete needed to construct the circular curb.
Discussion:
5 comments Page 1 of 1.
Katharnak said:
8 years ago
I think Sambar approach is better than Pappus.
Susheel said:
10 years ago
Tell me the Pappus theorem.
John said:
10 years ago
I solved using Pappus theorem. I got 1.079, I choose A.
Jack said:
10 years ago
I didn't use the Pappus-Guldinas theorem but I solved this question by using basic mathematical formulas.
Firstly, I found the interior side which sees the angle is 45 degree from (45*(2*pi*(18+0.4m))/360. Then with the same way I found the exterior side. And the I calculated the volume of the bottom part.
Finally, I calculated the volume of the upper part and addition of two volume and I got 1.073 m^3. I chose the nearest option C.
Firstly, I found the interior side which sees the angle is 45 degree from (45*(2*pi*(18+0.4m))/360. Then with the same way I found the exterior side. And the I calculated the volume of the bottom part.
Finally, I calculated the volume of the upper part and addition of two volume and I got 1.073 m^3. I chose the nearest option C.
Vanessa said:
1 decade ago
Could anyone please explain how to properly approach this problem using the Pappus-Guldinas theorem.
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