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Posted: 5/13/2022 8:10:31 PM EDT
….pull it tight, and then add 3 feet to the length of the rope, how high above the earth, equally suspended, would the new rope be?
Link Posted: 5/13/2022 8:11:22 PM EDT
[#1]
Is the earth on a treadmill?
Link Posted: 5/13/2022 8:12:05 PM EDT
[#2]
Originally Posted By Low_Country:
….pull it tight, and then add 3 feet to the length of the rope, how high above the earth, equally suspended, would the new rope be?
View Quote


zero inches, but very slightly less stretched.
Link Posted: 5/13/2022 8:13:18 PM EDT
[#3]
About half a foot.
Link Posted: 5/13/2022 8:13:34 PM EDT
[#4]
.00087".
Link Posted: 5/13/2022 8:13:39 PM EDT
[#5]
Link Posted: 5/13/2022 8:15:19 PM EDT
[#6]
One inch. Fact.
Link Posted: 5/13/2022 8:16:11 PM EDT
[#7]
About 5 3/4".
Link Posted: 5/13/2022 8:17:06 PM EDT
[Last Edit: 1badf350] [#8]
Don’t know but it would be 8700 miles longer
Link Posted: 5/13/2022 8:18:13 PM EDT
[#9]
There is no rope
Link Posted: 5/13/2022 8:18:36 PM EDT
[Last Edit: maslin02] [#10]
An increase of 0.00000007%? Really high off the ground.
Link Posted: 5/13/2022 8:19:11 PM EDT
[#11]
There are very closely 10,000,000 meters from the North Pole to the equator through Paris. So that's roughly 40,000,000 meters all around. We'll say that 3 feet is a meter, so we'll add one meter.

C = 2πr
r = C/2π

r1 = 40,000,000 / 2π = 6366197.72368 meters
r2 = 40,000,001 / 2π = 6366197.88283 meters

Uh...that doesn't make any sense...  How can adding one meter of length add more than a decimeter to the radius?
Link Posted: 5/13/2022 8:19:26 PM EDT
[Last Edit: Tuco22] [#12]
I'm too dumb for this

Originally Posted By wswartzendruber:
There are very closely 10,000,000 meters from the North Pole to the equator through Paris. So that's roughly 40,000,000 meters all around. We'll say that 3 feet is a meter, so we'll add one meter.

C = 2πr
r = C/2π

r1 = 40,000,000 / 2π = 6366197.72368 meters
r2 = 40,000,001 / 2π = 6366197.88283 meters

Uh...that doesn't make any sense...  How can adding one meter of length add more than a decimeter to the radius?
View Quote

Cool now do it in actual units of measurement.
Link Posted: 5/13/2022 8:20:56 PM EDT
[#13]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By wswartzendruber:
There are very closely 10,000,000 meters from the North Pole to the equator through Paris. So that's roughly 40,000,000 meters all around. We'll say that 3 feet is a meter, so we'll add one meter.

C = 2πr
r = C/2π

r1 = 40,000,000 / 2π = 6366197.72368 meters
r2 = 40,000,001 / 2π = 6366197.88283 meters

Uh...that doesn't make any sense...  How can adding one meter of length add more than a decimeter to the radius?
View Quote


41,804,003/41,804,000. Don’t bring meters into this shit
Link Posted: 5/13/2022 8:23:40 PM EDT
[#14]
6”’ish
Link Posted: 5/13/2022 8:24:19 PM EDT
[Last Edit: TescoVee] [#15]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By wswartzendruber:
There are very closely 10,000,000 meters from the North Pole to the equator through Paris. So that's roughly 40,000,000 meters all around. We'll say that 3 feet is a meter, so we'll add one meter.

C = 2r
r = C/2

r1 = 40,000,000 / 2 = 6366197.72368 meters
r2 = 40,000,001 / 2 = 6366197.88283 meters

Uh...that doesn't make any sense...  How can adding one meter of length add more than a decimeter to the radius?
View Quote
Quit needing so hard and be practical.  pi = 3 & 2*3=6 therefore 3ft/6 = half a foot.
Link Posted: 5/13/2022 8:29:48 PM EDT
[#16]
Pie...
Link Posted: 5/13/2022 8:30:33 PM EDT
[#17]
Uh lets see.  There's two cups in a pint, and there's uh, lets see.
Hang on a minute this might take me awhile.
Link Posted: 5/13/2022 8:31:28 PM EDT
[#18]
What kind of rope?
Link Posted: 5/13/2022 8:31:49 PM EDT
[#19]
Originally Posted By Low_Country:
….pull it tight, and then add 3 feet to the length of the rope, how high above the earth, equally suspended, would the new rope be?
View Quote


The same distance as if you did the exact same thing with your belt.
Link Posted: 5/13/2022 8:39:07 PM EDT
[Last Edit: MoarCoffee] [#20]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Dan_Conway:
About 5 3/4".
View Quote


This.  And the circumference of the earth doesn't matter.

X = R2-R1

C1 = 2*pi*R1
R1 = C1/(2*pi)

C2 = 2*pi*R2
C2 = C1+3
R2 = C2/(2*pi)
R2 = (C1+3)/(2*pi)

X = R2 - R1
X= (C1+3)/(2*pi) - C1/(2*pi)
X = 3/(2*pi)
X = ~0.48' = ~5.73"

Link Posted: 5/13/2022 8:40:29 PM EDT
[#21]
More importantly, how high would you be?
Link Posted: 5/13/2022 8:41:40 PM EDT
[#22]
statistically zero
Link Posted: 5/13/2022 8:48:18 PM EDT
[#23]
Explain again what the treadmill was for.
Link Posted: 5/13/2022 8:48:57 PM EDT
[Last Edit: TarzanT] [#24]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By wswartzendruber:
There are very closely 10,000,000 meters from the North Pole to the equator through Paris. So that's roughly 40,000,000 meters all around. We'll say that 3 feet is a meter, so we'll add one meter.

C = 2πr
r = C/2π

r1 = 40,000,000 / 2π = 6366197.72368 meters
r2 = 40,000,001 / 2π = 6366197.88283 meters

Uh...that doesn't make any sense...  How can adding one meter of length add more than a decimeter to the radius?
View Quote


You’re solving for radius - shouldn’t you be solving for diameter since it’s supposed to be equally spaced?

Or not?

Where are the magnets?


Link Posted: 5/13/2022 8:49:05 PM EDT
[#25]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By BLK_MAJK:
Is the earth on a treadmill?
View Quote

yes.

Link Posted: 5/13/2022 8:51:32 PM EDT
[#26]
Is it metric rope or Imperial?
Link Posted: 5/13/2022 8:52:15 PM EDT
[#27]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By captainpooby:
Is it metric rope or Imperial?
View Quote


American
Link Posted: 5/13/2022 8:52:54 PM EDT
[Last Edit: XJ] [#28]
Lameass gotcha question is gotcha



This ball of rock we live on is not a perfect sphere.

OP can't comprehend that gravity varies with location, let alone a fucking tape measure.
Link Posted: 5/13/2022 8:58:08 PM EDT
[#29]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By gillplate:
Explain again what the treadmill was for.
View Quote


Science
Link Posted: 5/13/2022 9:00:17 PM EDT
[Last Edit: Rusty-Shackleford] [#30]
It’s a trick question…

The world is flat.
Link Posted: 5/13/2022 9:02:40 PM EDT
[#31]
Above or below standing water?
Link Posted: 5/13/2022 9:03:06 PM EDT
[Last Edit: -Obsessed-] [#32]
Holy crap people.

This is 5th grade math.

Answer is 3'/(2pi), so basically 5.75".

Circumference is D x pi.

It's linear. So we don't need to know C or D to calculate incrementatity. For the equation to hold true, if you add 36" to circumference, you must add 36"/pi to diameter. That means the diameter of this imaginary rope circle is 11.5" larger. Since it's equally suspended, that would mean the 11.5" is split in 2, since the antipode would also have 5.75" of air between earth and rope.
Link Posted: 5/13/2022 9:04:08 PM EDT
[Last Edit: Jayne_Cobb] [#33]
As others have proven, just shy of half a foot, if the elasticity of the rope is ignored. However, the logistics of it make this a practical impossibility, not to mention a trip hazard.
Link Posted: 5/13/2022 9:04:26 PM EDT
[#34]
I gave the answer, give me my case of pmags.
Link Posted: 5/13/2022 9:08:05 PM EDT
[#35]
None . Gravity will make it just lay there on the ground.
Link Posted: 5/13/2022 9:09:20 PM EDT
[#36]
I read all those answers and still don’t understand. I guess I wouldn’t have passed the MCAT after all. Maybe law school really was a good decision.
Link Posted: 5/13/2022 9:10:22 PM EDT
[#37]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By j3_:
None . Gravity will make it just lay there on the ground.
View Quote

Came to post this
Link Posted: 5/13/2022 9:10:51 PM EDT
[#38]
Static or dynamic rope?
Link Posted: 5/13/2022 9:14:45 PM EDT
[#39]
The answer is 0 since the part of the rope that goes thru the hood would be cut and attached to a  stolen car and the whole thing would be pulled out of place.
Link Posted: 5/13/2022 9:17:45 PM EDT
[#40]
Since it would mean from above it could there could be many correct answers. The rope was also tight before the addition of 3' so who knows.
Link Posted: 5/13/2022 9:18:22 PM EDT
[#41]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By XJ:
Lameass gotcha question is gotcha



This ball of rock we live on is not a perfect sphere.

OP can't comprehend that gravity varies with location, let alone a fucking tape measure.
View Quote

It's not a gotcha question.

It is a question to find out how you think. Do you guestimate based on scale and gut feeling. Or do you slap the simple math on the problem and come up with the basic and correct answer.

It's one of my favorite "riddles", because I got it wrong, initially, even though I deal with math and geometry every day. My logical self said, "Well, you're only adding a very small amount of rope, percentage wise, so the rise would be infinitesimal.

As others point out, the rise would be identical to the rise if you added 3 feet to your belt. Roughly 6 inches. Because of pi and geometry which is an awesome thing.
Link Posted: 5/13/2022 9:18:29 PM EDT
[#42]
The earth is flat there is no correct answer.
Link Posted: 5/13/2022 9:19:15 PM EDT
[Last Edit: SmilingBandit] [#43]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By 44rdv4rk:


zero inches, but very slightly less stretched.
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By 44rdv4rk:
Originally Posted By Low_Country:
….pull it tight, and then add 3 feet to the length of the rope, how high above the earth, equally suspended, would the new rope be?


zero inches, but very slightly less stretched.

Exactly.

I'd call it "barely measurable".
Link Posted: 5/13/2022 9:19:20 PM EDT
[Last Edit: Ellenripley] [#44]
Institutional racism feet high
Link Posted: 5/13/2022 9:24:56 PM EDT
[#45]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Happy_Hour_Hero:
There is no rope
View Quote


You and your fookin rope.
Link Posted: 5/13/2022 9:26:27 PM EDT
[#46]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By SmilingBandit:

Exactly.

I'd call it "barely measurable".
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By SmilingBandit:
Originally Posted By 44rdv4rk:
Originally Posted By Low_Country:
….pull it tight, and then add 3 feet to the length of the rope, how high above the earth, equally suspended, would the new rope be?


zero inches, but very slightly less stretched.

Exactly.

I'd call it "barely measurable".

You would think so, wouldn't you?

But, no. OP should have eliminated the physical reality of the thought experiment by discounting any actual elasticity of the rope, assume perfect roundness of the Earth, etc.

Assume normal laws of geometry such as the definitions of radius, circumference, etc.
Link Posted: 5/13/2022 9:27:12 PM EDT
[#47]
Trick question. We all know the Earth is flat. Not today mister science man.
Link Posted: 5/13/2022 9:28:19 PM EDT
[#48]
Not enough information.  What type of material is it made of, stretch potential?
Link Posted: 5/13/2022 9:28:59 PM EDT
[#49]
Link Posted: 5/13/2022 9:31:46 PM EDT
[#50]
You want to put a noose around the earth?
Racist....
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