[Lab] what's an ipod touch weigh?

[bentfork at gmail.com]

Hmm...

Using t = sqrt ( 2d/g )

and a distance of 42 metres I get a total drop time of about 2.9 seconds
with out a parachute...

I also want to say, I love this Wikipedia page:

  http://en.wikipedia.org/wiki/Equations_for_a_falling_body


On 20 September 2011 16:06, <bentfork at gmail.com> wrote:

> I'm tempted to see if I can inflate a balloon fast enough to make it never
> reach the ground ;)  According to wikipedia (
> http://en.wikipedia.org/wiki/Lifting_gas#Hydrogen_versus_helium) ...
>
> the buoyant mass for one m3 of hydrogen in air is:
>>
>>    - 0.090 kg * (1 - (1.292 / 0.090) ) = -1.202 kg
>>
>>
>
> A standard touch seems to weigh about 100g
>
> www.apple.com/*ipodtouch*/specs.html
>
>
> Quote of the 'rules'
>
>> CONSTRAINTS
>>
>> The sky is the limit with your designs but you have to keep the following
>> constraints in mind:
>>
>>    - Freefall means *free fall* so it's gotta be graceful. There can be
>>    no external forces affecting the device or the drop won't qualify. This
>>    means no spinning, launching, or aggressively tethering the device. *No
>>    parachutes.*
>>
>>
>>    - Fall height. We'll be dropping these preservers from *way way up*,
>>    so be prepared for fall heights upwards of 140 feet.
>>
>>
> This may be a lot of fun
>
>
> On 20 September 2011 10:27, Darcy Whyte <darcy at siteware.com> wrote:
>
>> http://contest.freefallhighscore.com/contest.html
>>
>> I got some ideas for this egg-drop challenge. Anybody want to try?
>>
>> _______________________________________________
>> Lab mailing list
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>> http://artengine.ca/mailman/listinfo/lab
>>
>>
>
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