Current Events > Can you solve this SAT math question?

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Naysaspace 03/19/24 5:18:52 PM #1:	How many rotations? - Results (57 votes) 0.5 3.51% (2 votes) 2 1 45.61% (26 votes) 26 1.5 5.26% (3 votes) 3 2 45.61% (26 votes) 26 Two coins. These coins are the exact same and have the same radius and circumference. Roll the top coin around the bottom coin until it gets back to it's starting position. How many full rotations does the top coin make? https://gamefaqs.gamespot.com/a/forum/8/8a275a1e.png ~~This is known as the coin roll paradox.~~ --- AMD is the best company in the history of computing! <cite>Naysaspace posted [p:979455484] in Can you so... [t:80725626]...</cite> <quote> How many rotations? - Results (57 votes) 0.5 3.51% (2 votes) 2 1 45.61% (26 votes) 26 1.5 5.26% (3 votes) 3 2 45.61% (26 votes) 26 Show Voting Form Two coins. These coins are the exact same and have the same radius and circumference.Roll the top coin around the bottom coin until it gets back to it's starting position. How many full rotations does the top coin make? https://gamefaqs.gamespot.com/a/forum/8/8a275a1e.pngThis is known as the coin roll paradox. </quote> ... Copied to Clipboard!
R1masher 03/19/24 5:20:44 PM #2:	360 --- R1R1R1R1R1R1 <cite>R1masher posted [p:979455514] in Can you so... [t:80725626]...</cite> <quote>360 </quote> ... Copied to Clipboard!
Naysaspace 03/19/24 5:21:05 PM #3:	This is a handy explanation https://graphicmaths.com/recreational/paradoxes/rotating-coin/ --- AMD is the best company in the history of computing! <cite>Naysaspace posted [p:979455523] in Can you so... [t:80725626]...</cite> <quote>This is a handy explanationhttps://graphicmaths.com/recreational/paradoxes/rotating-coin/ </quote> ... Copied to Clipboard!
bigblu89 03/19/24 5:23:23 PM #4:	Yes. I can. --- It takes zero effort to be a good person. <cite>bigblu89 posted [p:979455555] in Can you so... [t:80725626]...</cite> <quote>Yes. I can. </quote> ... Copied to Clipboard!
LonelyStoner 03/19/24 5:24:33 PM #5:	720 degrees. You have to account for the first coins area and circumference. It takes two rotations to match up perfectly. --- He's all alone through the day and night. <cite>LonelyStoner posted [p:979455577] in Can you so... [t:80725626]...</cite> <quote>720 degrees. You have to account for the first coins area and circumference. It takes two rotations to match up perfectly. </quote> ... Copied to Clipboard!
VideoboysaysCube 03/19/24 5:30:53 PM #6:	Naysaspace posted... This is a handy explanation https://graphicmaths.com/recreational/paradoxes/rotating-coin/ This makes me wonder what other assumptions I've made about life are wrong. --- This sentence has five words. This sentence has eight words. Only one sentence in this signature is true. <cite>VideoboysaysCube posted [p:979455668] in Can you so... [t:80725626]...</cite> <quote>Naysaspace posted... </cite><quote>This is a handy explanationhttps://graphicmaths.com/recreational/paradoxes/rotating-coin/</quote>This makes me wonder what other assumptions I've made about life are wrong. </quote> ... Copied to Clipboard!
EndOfDiscOne 03/19/24 5:32:07 PM #7:	I had to visualize it, and I realized my initial guess was wrong. I haven't looked up the answer, but I would have gotten it wrong on an SAT since I'd be working faster. --- I am the Cheese! I am the best character on the show! I am better than both the salami and the bologna *COMBINED!* <cite>EndOfDiscOne posted [p:979455689] in Can you so... [t:80725626]...</cite> <quote>I had to visualize it, and I realized my initial guess was wrong. I haven't looked up the answer, but I would have gotten it wrong on an SAT since I'd be working faster. </quote> ... Copied to Clipboard!
RetuenOfDevsman 03/19/24 5:32:35 PM #8:	It would have to be two. If it just did one, the top of Washington's head would always be away from the eagle, which would be sliding instead of rolling. Then since the circumferences are the same, it would have to roll once in addition. Or to think of it another way, if you drew a line the length of the circumference and rolled it along ng it would rotate once, then there's another rotation when the path is curved into a circle. <cite>RetuenOfDevsman posted [p:979455699] in Can you so... [t:80725626]...</cite> <quote>It would have to be two. If it just did one, the top of Washington's head would always be away from the eagle, which would be sliding instead of rolling. Then since the circumferences are the same, it would have to roll once in addition.Or to think of it another way, if you drew a line the length of the circumference and rolled it along ng it would rotate once, then there's another rotation when the path is curved into a circle.</quote> ... Copied to Clipboard!
NeonOPPAl 03/19/24 5:34:28 PM #9:	I guess 2 because it rotates once from the circumference being the same, and another for the viewing angle (ie: when it's halfway around, it will be right side up for us) --- https://imgur.com/aMaI3hj https://imgur.com/7PsdJNc https://imgur.com/eK8vZVn https://imgur.com/u2HR4nG https://imgur.com/nQGM5cZ <cite>NeonOPPAl posted [p:979455734] in Can you so... [t:80725626]...</cite> <quote>I guess 2 because it rotates once from the circumference being the same, and another for the viewing angle (ie: when it's halfway around, it will be right side up for us) </quote> ... Copied to Clipboard!
MarcoRubio 03/19/24 5:37:35 PM #10:	It's fucking two --- Confirmed unbiased <cite>MarcoRubio posted [p:979455783] in Can you so... [t:80725626]...</cite> <quote>It's fucking two </quote> ... Copied to Clipboard!
Naysaspace 03/19/24 5:46:19 PM #11:	Why it's 2 and not one: The stationary coin is also technically rolling. Think like they are two gears, there is no "sliding". But the camera/view is "locked" to the "stationary" coin. It still moves, so the movement is "transferred" to the outside/rolling coin. When i found this out it blew my mind. The problem i worked on was a bit tougher (two different sized circles, one circumference 1, other circumference 3, and the answer is 4, not 3). AFAIK, the formula for rotations is Large R/ small r + small r. --- AMD is the best company in the history of computing! <cite>Naysaspace posted [p:979455912] in Can you so... [t:80725626]...</cite> <quote>Why it's 2 and not one: The stationary coin is also technically rolling. Think like they are two gears, there is no "sliding". But the camera/view is "locked" to the "stationary" coin. It still moves, so the movement is "transferred" to the outside/rolling coin. When i found this out it blew my mind. The problem i worked on was a bit tougher (two different sized circles, one circumference 1, other circumference 3, and the answer is 4, not 3). AFAIK, the formula for rotations is Large R/ small r + small r. </quote> ... Copied to Clipboard!
Naysaspace 03/19/24 5:49:50 PM #12:	RetuenOfDevsman posted... It would have to be two. If it just did one, the top of Washington's head would always be away from the eagle, 1 full rotation actually has the top of the head facing the eagle, but it's at the bottom rather than back in the starting position --- AMD is the best company in the history of computing! <cite>Naysaspace posted [p:979455967] in Can you so... [t:80725626]...</cite> <quote>RetuenOfDevsman posted... </cite><quote>It would have to be two. If it just did one, the top of Washington's head would always be away from the eagle,</quote>1 full rotation actually has the top of the head facing the eagle, but it's at the bottom rather than back in the starting position </quote> ... Copied to Clipboard!
DDP886 03/19/24 6:01:45 PM #13:	Reminds me of the GRE --- my signature <cite>DDP886 posted [p:979456182] in Can you so... [t:80725626]...</cite> <quote>Reminds me of the GRE </quote> ... Copied to Clipboard!
Evening_Dragon 03/19/24 6:05:52 PM #14:	Just visualized it and only 2 looked right. Thanks for that explanation link. --- https://www.joincampaignzero.org/ Guide, it's Guide, it's that Guide <cite>Evening_Dragon posted [p:979456256] in Can you so... [t:80725626]...</cite> <quote>Just visualized it and only 2 looked right. Thanks for that explanation link. </quote> ... Copied to Clipboard!
kelemvor 03/19/24 6:07:14 PM #15:	Isnt this a question that was wrong on an official SAT test? <cite>kelemvor posted [p:979456272] in Can you so... [t:80725626]...</cite> <quote>Isnt this a question that was wrong on an official SAT test?</quote> ... Copied to Clipboard!
Naysaspace 03/19/24 6:18:13 PM #16:	kelemvor posted... Isnt this a question that was wrong on an official SAT test? it was, i believe that was a long time ago however. --- AMD is the best company in the history of computing! <cite>Naysaspace posted [p:979456477] in Can you so... [t:80725626]...</cite> <quote>kelemvor posted... </cite><quote>Isnt this a question that was wrong on an official SAT test?</quote>it was, i believe that was a long time ago however. </quote> ... Copied to Clipboard!
radical_rhino 03/19/24 6:28:00 PM #17:	Thats not what a paradox is. --- .____ [____]===0 . . . . Ye olde beating stick. <cite>radical_rhino posted [p:979456646] in Can you so... [t:80725626]...</cite> <quote>Thats not what a paradox is. </quote> ... Copied to Clipboard!
Baphometa 03/19/24 6:40:59 PM #18:	radical_rhino posted... Thats not what a paradox is. https://gamefaqs.gamespot.com/a/forum/2/2fee5932.jpg --- He/Them "Am I a butterfly dreaming I'm a man... Or a bowling ball dreaming I'm a plate of sashimi? Never assume that what you see and feel is real!" <cite>Baphometa posted [p:979456871] in Can you so... [t:80725626]...</cite> <quote>radical_rhino posted... </cite><quote>Thats not what a paradox is.</quote>https://gamefaqs.gamespot.com/a/forum/2/2fee5932.jpg </quote> ... Copied to Clipboard!
Robot2600 03/19/24 6:48:44 PM #19:	weird! --- --- <cite>Robot2600 posted [p:979456981] in Can you so... [t:80725626]...</cite> <quote>weird! </quote> ... Copied to Clipboard!
Seaman_Prime 03/19/24 7:12:51 PM #20:	Holy shit im doing this with my fingers and its blowing my mind <cite>Seaman_Prime posted [p:979457359] in Can you so... [t:80725626]...</cite> <quote>Holy shit im doing this with my fingers and its blowing my mind</quote> ... Copied to Clipboard!
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Current Events > Can you solve this SAT math question? (+) Yeah! (+)

Current Events > Can you solve this SAT math question?