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+--- Thread: help with compound machine project (/showthread.php?tid=72331)
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help with compound machine project - beerman - 02-12-2009
My daughter has been tasked with building a model size compound machine. Two simple machines working together to perform a task. Creativity is NOT my specialty. Any suggestions?
Re: help with compound machine project - mattkime - 02-12-2009
>>Creativity is NOT my specialty.
Thats okay, its her assignment!
Now, what is _your_ home work for the day?
Re: help with compound machine project - beerman - 02-12-2009
My daughter will do the work with assistance from me. There is no harm in getting ideas from others, in fact her instruction sheet encourages it.
Re: help with compound machine project - Doc - 02-12-2009
2 pencils, 10 popsicle sticks and a bunch of butterfly clips?
Re: help with compound machine project - Racer X - 02-13-2009
think rube goldberg.
Re: help with compound machine project - Doc - 02-13-2009
It's called a polygraph. (Not the lie detector.)
You use it to write/draw the same thing on two pieces of paper at the same time.
A compound machine combines multiple simple machines to make one device. In this case, you have several levers and axles working together.
'One of the neatest compound machines a kid can make in 5 minutes.
Re: help with compound machine project - Doc - 02-13-2009
Late edit: I wrote "several levers and axles working together," but that should have been "several fulcrums and levers at work."
Re: help with compound machine project - TheCaber - 02-13-2009
I think the device is a 'pantograph' : http://en.wikipedia.org/wiki/Pantograph
Re: help with compound machine project - Doc - 02-13-2009
Either word works. It's also a pentagraph.
Re: help with compound machine project - BigGuynRusty - 02-13-2009
TheCaber wrote:I thought so also, but a Pantograph increases/decreases whatever you are drawing, whatever that thing is, it doesn't even do what it states, make copies.
I think the device is a 'pantograph' : http://en.wikipedia.org/wiki/Pantograph
Mechanically it is wrong, unless there is a part missing.
BGnR