Re: [Phys-L] Nice question on buoyance and balance

[rjensen@ualberta.ca]

My thoughts...
1. The shape of the water isn't an issue.
2. The steel ball isn't adding any mass to the RHS.
3. It doesn't matter whether the ping pong ball is in the water or
floating on top. All those forces are dealt with within the beaker. 
4. The ping pong ball is adding its mass to the LHS. 
...left sinks.

I'd like to know John's momentum-flow approach. If I ever learned it,
I've forgotten it.

 Dr. Roy Jensen
(==========)-----------------------------------------¤
 Lecturer, Chemistry
 E5-33F, University of Alberta
 780.248.1808



On Wed, 29 Jan 2014 09:36:13 +0000, you wrote:

> Hi,
>
> a former studen of mine send me a link to a nice question:
> <http://wealthmanagement.com/question/puzzler-odd-balance>.
>
> I usually ask a variation of this question in my class. It is, in my opinion, a good example of conceptual reasoning which goes well beyond rote memorization. Probably many of you have seen this question before but I thought it might be worth sharing.
>
> Regards,
>
> Antti