i need to use a least four simple machines to complete one objective.\npully,wedge,wheel and axle,inclined plane,etc.
199529
Well try waking up in the morning. 1.the wheel rolls down an inclined plane and hits a lever. 2. the lever then triggers a pully.   i got you started now use your imagination for the rest.....
286693
Hovercraft? Wow.\n\nTry a hardware store.
426672
there are wooden crafts availabe...so u can buy and those models and work on the remot control part..there are more manuals available to hook uo with those contrls part...
69884
focusing on certain tasks
653564
it is a type of Machinery.
373868
1, 2, 4, 8, 16, or 32
357691
I suggest you put a message on "Engineering Tips" www.eng-tips you will need to register and go to the engineering area suited to your question. I guess it will be Mechanical
299540
About 12 years ago, I bought a weight lifting machine called the Gravity Edge.  It was supposed to use your own body weight to lift.  It worked great, only cost about $400 but I lost interest after a few months.
21234
This sounds like a homework assignment, so I am not going to put it in the format you requested.\n\nYes, the concept of work does explain all of that. Without pulleys, levers, and wedges, we would have to lift 2 ton metal pieces without the use of cranes. You would be so surprised on how many things depend on pulleys, levers, and wedges.\n\nJ.N.S
394016
go 4 d c motor ,,,, model of it is easy n interesting, eye catcher.... i made that last yr n got highest marks... :-)... it ll include both elec n magnetics..
220218
You may want to try Centripedal Force i.e. Turnings and slopes..\n\nBut it has some stuff to do with Physics as well. \n\nAlso you may want to find the maximum and minumum speeds at turnings. Include Frictional Force and try to minimize it using Calculus. \n\nTake Simple Circuits like circles, oval, parabola etc. Then take their equations and use calculus to find area under the curve etc. etc.\n\nWell thatz all comes to my mind for now!! :) BEST OF LUCK..
80301
Consider the five basic machines, The lever and fulcrum, The inclined plain, The wheel and axle, The screw and the pulley.\n\nStart with a boyscout pine block racer kit, sand the wheels so that the tread is rounded rather than flat to reduce friction. for the undriven wheels put the nails in the wheels and deposit a liberal amount of petroleum based oil on the axle. This will cause the plastic to swell slightly for a good fit to the axles to prevent wobble, be sure to clean all the flash off of the nails first and polish them.\n\nThe driven wheels willneed a fixed axle that connects the wheels.
312710
Oh wow, you could get a million examples of that. A compund machine is anything that ISN'T a simple machine. So if it isn't a wedge, lever, pulley, inclined plane, of other simple machine then it is a compound machine. They are a combination of multiple simple machines.\nTo actually answer your question though, a gear system and a car engine
135208
The most important thing for you to know is your own mathematical skills.  You must know how to add, subtract, multiply, & divide.  NEVER be fully dependent on the machine!  You need to have a really good idea of what the total should be without the machine.  This is so that you can do it on your own in case the machine is broken or the power is out.
90049
Very Nobel interest. If you can build it then let me know. Here are the tips from me. Use FM band to for the controls, if you can have a digital control system then you can operate that with a high and low pulse from the ground. And if its a toy plane then there shouldn't be more then 3 or 4 controls which should be easier to design. contact me let me know the further update on your this project and any assistance.
89968
ummmmm.....what is it that you're trying to engineer?  cars, trains, software, buildings?
387755
We did something like this in my physics lab with an Atwood machine.  It was a pully with weights hanging from it.  I can't exactly remember how it worked, but maybe this will inspire you.  We also did something with an air track and these two masses colliding and we'd see which one would go in which diretcion.  You need a nearly frictionless surface, like an air hockey table or ice slab.