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Question Uniform Lamina ( Physics Help and Math Help - Physics Forums Calculus Beyond )
Updated: 2008-06-09 01:05:09 (5)
Uniform Lamina

Where is the centre of mass of a semicircular lamina which is uniform? I know it is somewhere along the line of symestry, but where excactly?

Answers: Uniform Lamina ( Physics Help and Math Help - Physics Forums Calculus Beyond )
Uniform Lamina

It only takes a few Moments to work it out.
com = 4r/3pi

Fermat

Uniform Lamina

Can you be of more help please?

brandon26

Uniform Lamina

Of course. Drag your mouse over the answer in my last post.

Fermat

Uniform Lamina

Surely, if you have a question like that, you know the basic formulas.

The y-coordinate of the centroid of a region (center of mass assuming uniform density) is Click to see the LaTeX code for this image.
Click to see the LaTeX code for this image is, of course, the area of the region.


Once, when I was teaching this, a student became fascinated by the word "lamina" (had never seen it before, apparently). As the last question on the final exam, I asked "What is 'lamina' spelled backwards?"

Another student became furious with me because "That question doesn't make any sense!"

HallsofIvy

Uniform Lamina

Originally Posted by Fermat
Of course. Drag your mouse over the answer in my last post.
Oh sorry. Haha. I didnt realise there was invisible ink on the paper.

brandon26

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