Board 8 > If you can solve this SECOND MATH Problem for 6 year olds, i'll be IMPRESSED!!!!

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mrduckbear
08/22/17 12:10:20 AM
#1:


The answer is...










here is the second Math problem for 6 year olds that can be a bit tricky..but asian mathematicians who designed this said it will be good to increase their ability to do math...

So if you can get this, i'd be impressed :o.

http://i.dailymail.co.uk/i/pix/2017/08/21/12/436F595600000578-4809178-image-a-74_1503315086838.jpg
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Zyxyz0
08/22/17 12:19:09 AM
#2:


this is the first one of these "problem for kids is really hard!!" problems I've actually been able to solve easily

circle is 9kg, so square is (72 - 45) = 27kg, so 2 squares are 54kg
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LordoftheMorons
08/22/17 12:26:09 AM
#3:


Need some info on the distances of things from the fulcrum
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azuarc
08/22/17 12:42:11 AM
#4:


LordoftheMorons posted...
Need some info on the distances of things from the fulcrum

It would appear, if we define one unit as the diameter of a ball, that the lever is basically three units wide. Although it's not quite accurate, I think we have to assume that in the first example, the balls' centers of masses are 1.5 and 2.5 units out, and the weight ranges from 1 to 3 units out, so it's COM it's 2 units from the fulcrum.
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thundersheep
08/22/17 12:53:56 AM
#5:


If you listed 27 (and numbers in that range) as an answer I'm sure it could have fooled at least 25% of the correct responses.
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Ace_Killjoy
08/22/17 1:09:08 AM
#6:


azuarc posted...
LordoftheMorons posted...
Need some info on the distances of things from the fulcrum

It would appear, if we define one unit as the diameter of a ball, that the lever is basically three units wide. Although it's not quite accurate, I think we have to assume that in the first example, the balls' centers of masses are 1.5 and 2.5 units out, and the weight ranges from 1 to 3 units out, so it's COM it's 2 units from the fulcrum.


Remember though, this is a problem for "6 year olds," and I don't remember being taught about torque in the first grade. (Not that my experience is anything to go by.)

If you make that assumption, this is actually quite simple.
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Vlado
08/22/17 7:18:26 AM
#7:


FFS, only post these things if they're actually tricky.
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WhoopsyDaisy
08/22/17 10:15:00 AM
#8:


Ace_Killjoy posted...
azuarc posted...
LordoftheMorons posted...
Need some info on the distances of things from the fulcrum

It would appear, if we define one unit as the diameter of a ball, that the lever is basically three units wide. Although it's not quite accurate, I think we have to assume that in the first example, the balls' centers of masses are 1.5 and 2.5 units out, and the weight ranges from 1 to 3 units out, so it's COM it's 2 units from the fulcrum.


Remember though, this is a problem for "6 year olds," and I don't remember being taught about torque in the first grade. (Not that my experience is anything to go by.)

If you make that assumption, this is actually quite simple.


Most people forget their torque lesson, it's one of the first things that gets covered in first grade.
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Alanna82
08/22/17 3:01:41 PM
#9:


I clicked 52 but I meant 54. oops.
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LeonhartFour
08/22/17 3:09:02 PM
#10:


oh man I gotta solve this so I can impress Full Throttle

I need his approval
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NFUN
08/22/17 3:11:14 PM
#11:


Ace_Killjoy posted...
azuarc posted...
LordoftheMorons posted...
Need some info on the distances of things from the fulcrum

It would appear, if we define one unit as the diameter of a ball, that the lever is basically three units wide. Although it's not quite accurate, I think we have to assume that in the first example, the balls' centers of masses are 1.5 and 2.5 units out, and the weight ranges from 1 to 3 units out, so it's COM it's 2 units from the fulcrum.


Remember though, this is a problem for "6 year olds," and I don't remember being taught about torque in the first grade. (Not that my experience is anything to go by.)

If you make that assumption, this is actually quite simple.

0KK6i3V
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Forceful_Dragon
08/22/17 3:11:42 PM
#12:


119.05 lbs
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NFUN
08/22/17 3:13:15 PM
#13:


Forceful_Dragon posted...
119.05 lbs

gtfo
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