The Ask Mickeko Thread!

Sunday, April 5, 2009 by mickeko | Discussion: WinCustomize Talk

Ask me anything, I answer all questions (*).

You may get a stupid answer, an incorrect answer, or maybe even the RIGHT answer... Who knows...

Any answer given that is true and correct (as far as I know or in my opinion where applicable) will be marked with a  .

 

(*) - Exceptions: Personal questions or any other questions I don't feel like answering may not be answered. Being polite might help in these cases...

First Previous Page 4 of 8 Next Last
HG_Eliminator
Reply #61 Tuesday, April 7, 2009 6:23 PM

 

Superman is correct.

The optimal body has axial symmetry and has the shape depicted at the picture below. The green dot denotes the point of maximal free-fall acceleration. The body can be described by relating distance r from the point at which the maximal acceleration is found as a function of the angle {theta} from the axis of symmetry (vertical black line).

r2=R2cos({theta}).

The acceleration at the green point will be g=(4/5)(15/4)1/3{pi}2/3M/V2/3. This is only 2.6% larger than the gravity on the surface of a spherical planet.



The solution: Assume for a moment that we already know that the body should have axial symmetry. Consider a narrow ring of matter lying on the surface of the body. (Center of the ring coincides with the axis of symmetry and its plane is perpendicular to that axis. It is depicted on the figure below.) If the mass of the ring is dM and the distance between the points of the ring and the "green point" is r, then the contribution of the ring to free-fall acceleration will be G*{dM}cos({theta})/r2.



If we remove this ring of material from the surface and place it somewhere else on the surface, it will have different r and different angle {theta}. Since the shape is optimal, it is "stationary", i.e. infinitesimal changes should not change the acceleration. This will happen only if cos({theta})/r2 is constant. Consequently, r2=R2cos({theta}). The constant R denotes the maximal diameter of the body. Once the shape of the body is given, we can easily find (by an elementary integration*) that its volume V=(4/15){pi}R3, while the acceleration at point g is given** by the expression which has been presented above.

Fuzzy Logic
Reply #62 Tuesday, April 7, 2009 7:19 PM

Aye, and if my granny had wheels she'd be a waggon...

DrJBHL
Reply #63 Tuesday, April 7, 2009 7:22 PM

In erudite terms, Baloney. That's a static solution. What's needed is a vector solution.

Ta-Da! Voila:

Wizard1956
Reply #64 Tuesday, April 7, 2009 7:52 PM

Enough with the serious stuff,y'all are making my head hurt!

superman
Reply #65 Wednesday, April 8, 2009 12:40 AM

You may think you want your dream girl, but really, you don't.

When you want anything, you feel a stong desire for that.

When I wanted her I felt too strong a desire for her so it was a 'want' there. True, I didn't need her as she was not really required for my subsistence as I could successfully survive without her.

It's not wrong. It may not be what you expected or wanted it to be though.

Cmon guess another. Its not me who expected anything. This quetion was asked to me by a third person. In fact I dont know what I expect but expect it to be same as what he thought.

Sometimes I think to offer him the dictionary and say that look 'ur word should be there'

 

 

 

 

HG_Eliminator
Reply #66 Wednesday, April 8, 2009 12:56 AM

If π is 3.14... is it still the same with Whipped cream on top?

A bit of trivia, my Original Nick "PhenomTT"  the TT was intended to emulate the Greek letter used for Pi and Phenom was short for phenomenon, together it was meant to represent an irrational number of perceived events. Ie .. me

sydneysiders
Reply #67 Wednesday, April 8, 2009 3:08 AM

does karma really ever get round to bitches?   ..or we just make ourselves feel better thinking it does..

mickeko
Reply #68 Wednesday, April 8, 2009 11:27 AM

sydneysiders
does karma really ever get round to bitches?   ..or we just make ourselves feel better thinking it does..

Well, it may seem like it does at times. But it's really just random occurences.

You build up your own karma, and you are the one to eventually administer whatever is coming for you. There's nothing more to it.

(You be the judge of the accuracy of this. It's how I see things. It's a result of the insane amount of thining I've done over the years. I do not represent any theological organization, I only represent myself. )

ArileenDesign
Reply #69 Thursday, April 9, 2009 2:31 AM

Where is my damn Pizza?

 

ArileenDesign is looking for HG

mickeko
Reply #70 Thursday, April 9, 2009 7:53 AM

ArileenDesign
Where is my damn Pizza?

 

ArileenDesign is looking for HG

When you find the pizza, you'll also find HG. It's written on concrete.

HG_Eliminator
Reply #71 Thursday, April 9, 2009 2:31 PM

It's written on concrete.

in pizza sauce?

 

DrJBHL
Reply #72 Thursday, April 9, 2009 3:14 PM

You're asking for it, HG....

mickeko
Reply #73 Thursday, April 9, 2009 6:23 PM

HG_Eliminator

It's written on concrete.
in pizza sauce?

 

I don't recommend eating concrete, pizza sauced or not.

starkers
Reply #74 Friday, April 10, 2009 1:01 AM

I've been thinking, if a piece of string comes up and inch short for my needs, would a rope suffice?

And if so, would starch aid in performing Indian rope tricks?

Chasbo
Reply #75 Friday, April 10, 2009 3:02 AM

Late to the party again......

How can you be in 2 places at once when your not anywhere at all?

FIRESIGN THEATRE!!!!!!!

mickeko
Reply #76 Friday, April 10, 2009 4:08 AM

starkers
I've been thinking, if a piece of string comes up and inch short for my needs, would a rope suffice?

And if so, would starch aid in performing Indian rope tricks?

I piece of rope is not longer than a piece of string, it's just wider. I suppose that makes your second question void.

Fuzzy Logic
Reply #77 Friday, April 10, 2009 4:10 AM

WARNING! PIZZA ALERT!!!

mrs_starkers
Reply #78 Friday, April 10, 2009 11:13 AM

4 8 15 16 23 42

I will be puting these numbers on Lotto next week I hope I win, and Jaffo if they do come up expect a 50cent cheque in the mail.   I will share I am not greedy

Wizard1956
Reply #79 Friday, April 10, 2009 11:23 AM

Can we land on the sun if we go at night?

Which direction do birds at the south pole fly for the winter?

If time stands still,can we see it?

mickeko
Reply #80 Friday, April 10, 2009 1:00 PM

Wizard1956
Can we land on the sun if we go at night?

Which direction do birds at the south pole fly for the winter?

If time stands still,can we see it?

No, we can't land on the sun, period.

The birds at the south pole don't fly anywhere for the winter.

I looked at a photo, it's as still as something get, and I didn't see time on that... Perhaps if there's a clock on the picture...

mrs starkers

4 8 15 16 23 42
I will be puting these numbers on Lotto next week I hope I win, and Jaffo if they do come up expect a 50cent cheque in the mail.   I will share I am not greedy

I'd be careful, it's the number sequence from Lost (tv-series).

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