- #1
lalbatros
- 1,256
- 2
Hello,
I have found a nice http://www.upscale.utoronto.ca/Gene...Rel/GenRel.pdf#search=" puzzle filetype:pdf"".
It ends with a puzzle that I like very much.
Juggling with Christoffel symbols and curvature tensors is not needed!
Writing the equations of motion is a technical answer, could you try?
however, would be a short answer. How short could you do it? (explanation included!)
Cork in a water bucket
A bucket of water has a spring soldered to the bottom, as shown on the picture.
A cork is attached to the the spring, and is therefore suspended under the surface of the water.
You are on top of the CN tower, holding the bucket, and step off.
While falling towards the ground:
* do you see the cork move towards the top of the water,
* towards the bottom of the bucket,
* or stay where it is relative to the bucket and the water?
Michel
I have found a nice http://www.upscale.utoronto.ca/Gene...Rel/GenRel.pdf#search=" puzzle filetype:pdf"".
It ends with a puzzle that I like very much.
Juggling with Christoffel symbols and curvature tensors is not needed!
Writing the equations of motion is a technical answer, could you try?
however, would be a short answer. How short could you do it? (explanation included!)
Cork in a water bucket
A bucket of water has a spring soldered to the bottom, as shown on the picture.
A cork is attached to the the spring, and is therefore suspended under the surface of the water.
You are on top of the CN tower, holding the bucket, and step off.
While falling towards the ground:
* do you see the cork move towards the top of the water,
* towards the bottom of the bucket,
* or stay where it is relative to the bucket and the water?
Michel
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