LumberJocks

Newton’s Gravity Defying Puzzle

  • Advertise with us
Project by mtairymd posted 05-05-2017 10:26 PM 1240 views 6 times favorited 17 comments Add to Favorites Watch

This puzzle was dropped off on my desk last week. The “rocket” is placed in the cup. You must remove it without dumping it out or using tools (paper clips, tape, etc.). The problem is that there is no place to grab the rocket. How do you get it out? See video at the end if you can’t figure it out.

I usually make projects from wood but I don’t have a lathe. Therefore, I opted for a 3D print (white/magenta version) with dimensions taken from the wood version. I’ve included drawings in case someone wants to make their own.

More Info: https://www.instructables.com/id/Newtons-Gravity-Defying-Puzzle-3D-Print/
Video Solution: https://youtu.be/fVAllOlHQvs





17 comments so far

View Dark_Lightning's profile

Dark_Lightning

2765 posts in 2804 days


#1 posted 05-05-2017 10:47 PM

Are you allowed to pick it up? If so, you can pick it up, and lower it quickly and the rocket will pop out.

-- Random Orbital Nailer

View mtairymd's profile

mtairymd

161 posts in 1076 days


#2 posted 05-05-2017 10:58 PM

No. It must sit on a flat surface. The solution is interesting


Are you allowed to pick it up? If so, you can pick it up, and lower it quickly and the rocket will pop out.

- Dark_Lightning


View jbay's profile (online now)

jbay

1502 posts in 595 days


#3 posted 05-05-2017 11:05 PM

Both solutions are extreme.
People don’t carry air nozzles and compressors with them, and who would be expected to pour water on someone else’s puzzle?
I could probably light the outside on fire too, and after it burns out I could grab the middle.
It did get me to watch your video though, if that’s what it was designed for.

-- If anyone would like to see my Portfolio, PM me and I would be glad to send you the link.

View mtairymd's profile

mtairymd

161 posts in 1076 days


#4 posted 05-05-2017 11:25 PM

Let me clarify. An air compressor isn’t needed. It was easier for me to make the video with an air hose. The solution is to blow either down or across the “rocket”. It pops right out.


Both solutions are extreme.
People don t carry air nozzles and compressors with them, and who would be expected to pour water on someone else s puzzle?
I could probably light the outside on fire too, and after it burns out I could grab the middle.
It did get me to watch your video though, if that s what it was designed for.

- jbay


View Desert_Woodworker's profile (online now)

Desert_Woodworker

735 posts in 910 days


#5 posted 05-06-2017 04:44 AM

I like this Q: is this about density or bouyancy? Also, this promotes what the new generation likes- Wood but also composites with the machines that produce them CNC, laser and 3d printers

-- Desert_Woodworker

View Desert_Woodworker's profile (online now)

Desert_Woodworker

735 posts in 910 days


#6 posted 05-06-2017 05:09 AM



Both solutions are extreme.
People don t carry air nozzles and compressors with them, and who would be expected to pour water on someone else s puzzle?
I could probably light the outside on fire too, and after it burns out I could grab the middle.
It did get me to watch your video though, if that s what it was designed for.

- jbay

There are other substitutes for water – just think what a man in the woods would do….

-- Desert_Woodworker

View Dutchy's profile

Dutchy

2327 posts in 1864 days


#7 posted 05-06-2017 07:17 AM

GREAT.

Is measerment in ” or mm?

-- https://dutchypatterns.com/

View mtairymd's profile

mtairymd

161 posts in 1076 days


#8 posted 05-06-2017 10:48 AM

The dimensions are in inches. Sorry about all the significant figures and non-standard sizes. I used calipers to take the measurements and didn’t need to worry about drill sizes since I was printing it.

GREAT.

Is measerment in ” or mm?

- Dutchy


View mtairymd's profile

mtairymd

161 posts in 1076 days


#9 posted 05-06-2017 11:04 AM

Thanks. The density/buoyancy would be in play if you filled the cup with water. The real solution is to blow on it.

I realized that I’m still a very amateur woodworker a while back while trying to make a block pin puzzle. http://lumberjocks.com/projects/304650

My 3D print of the same part went together perfectly. It took a lot of sanding and a hammer to get my wood version to mate.


I like this Q: is this about density or bouyancy? Also, this promotes what the new generation likes- Wood but also composites with the machines that produce them CNC, laser and 3d printers

- Desert_Woodworker


View mtairymd's profile

mtairymd

161 posts in 1076 days


#10 posted 05-06-2017 11:07 AM

Funny. I couple of people asked if they could suck it out. I said sure but that would be pretty nasty after Bob and Bill just tried that.

Both solutions are extreme.
People don t carry air nozzles and compressors with them, and who would be expected to pour water on someone else s puzzle?
I could probably light the outside on fire too, and after it burns out I could grab the middle.
It did get me to watch your video though, if that s what it was designed for.

- jbay

There are other substitutes for water – just think what a man in the woods would do….

- Desert_Woodworker


View helluvawreck's profile

helluvawreck

26846 posts in 2562 days


#11 posted 05-06-2017 12:52 PM

These puzzles are really nice and very colorful too.

helluvawreck aka Charles
http://woodworkingexpo.wordpress.com

-- If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away. Henry David Thoreau

View mtairymd's profile

mtairymd

161 posts in 1076 days


#12 posted 05-06-2017 02:14 PM

Thank you.


These puzzles are really nice and very colorful too.

helluvawreck aka Charles
http://woodworkingexpo.wordpress.com

- helluvawreck


View Iamjacob's profile

Iamjacob

48 posts in 2322 days


#13 posted 05-06-2017 07:46 PM



I like this Q: is this about density or bouyancy? Also, this promotes what the new generation likes- Wood but also composites with the machines that produce them CNC, laser and 3d printers

- Desert_Woodworker

It’s about pressure differences. When the air is not moving the pressure inside is the same as the outside. When you blow over the top of the surface the fast moving air has a lower pressure and the air inside pushes the “rocket” out.

This is the same principal as how airplanes fly.

View Desert_Woodworker's profile (online now)

Desert_Woodworker

735 posts in 910 days


#14 posted 05-06-2017 08:11 PM


I like this Q: is this about density or bouyancy? Also, this promotes what the new generation likes- Wood but also composites with the machines that produce them CNC, laser and 3d printers

- Desert_Woodworker

It s about pressure differences. When the air is not moving the pressure inside is the same as the outside. When you blow over the top of the surface the fast moving air has a lower pressure and the air inside pushes the “rocket” out.

This is the same principal as how airplanes fly.

- Iamjacob


Thanks for this explanation.

-- Desert_Woodworker

View majuvla's profile

majuvla

10535 posts in 2563 days


#15 posted 05-07-2017 12:02 PM

Very fun to look at those shapes and colours.

-- Ivan, Croatia, Wooddicted

showing 1 through 15 of 17 comments

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com