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Old January 13th, 2017, 09:22 PM   #33
Racer x
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Name: Eric
Location: Iowa City
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This is an interesting thing to think about. Take two lumps
Of metal. Exactly the same weight and density. Form one lump
Into a ball. Form the other onto a needle with points at both ends. Now you have two pieces of metal with drastically different shapes . If you drop them both into a thin viscous liquid the needle will move faster. Because the ball has more frontal area and drag at the rear from the way fluids wrap around . But if you use a thicker liquid the needle slows down because there is more surface area along the sides. This friction or drag makes the needle go slower in the thick liquid.
Now take the same two shapes and use a medium viscosity liquid. But change the speed of each shape.
https://youtu.be/j0rQ4F3f-Ic
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