water machine

vicki · Post by **vicki** » Wed Apr 11, 2007 3:15 am

i need help to make a water machine using water drips from container a into container b which is attached to a string the other end of the string is attached to the main movementmodel making physical science :oops: :w

deleted-71588 · Post by **deleted-71588** » Wed Apr 11, 2007 6:24 am

What grade are you in?

Most machines are designed to do something. What is your "water machine" supposed to do?

vicki · Post by **vicki** » Wed Apr 11, 2007 3:45 pm

grade 7

deleted-71588 · Post by **deleted-71588** » Wed Apr 11, 2007 4:27 pm

What is your machine supposed to do?

vicki · Post by **vicki** » Wed Apr 11, 2007 7:13 pm

move a object

deleted-71588 · Post by **deleted-71588** » Thu Apr 12, 2007 2:38 am

This is fast becoming a game of twenty questions.... At this rate, it is going to take a while for us to understand what you want to do.

"Move an object". What direction? What does the object weigh? What other properties does it have? ....

Since I don't really know enough specifics, here are some suggestions for you to proceed on your own:

You need to break the problem down and research and understand each aspect.

The energy you are going to use is Potential Energy stored in the water in container A that is higher than container B. I searched "Physics Potential Energy" and found the http://www.physicsclassroom.com/Class/energy/u5l1b.html
See if this helps or do your own search.

Here is an project on using pulleys to lift objects https://www.sciencebuddies.org/mentorin ... ?from=Home Pulleys can also be used to change the direction of a "tension" force (pulling on a rope or string). The references in this project are useful in understanding pulleys.

If you use a pulley, it has to be attached to some support so you have some structure to build.

Crude pulleys don't have to rotate. A simple dowel rod or anything with a rounded edge can be used if you can there is enough force to overcome the friction.http://www.fearofphysics.com/Friction/frintro.html

You also have a "control" problem to think about or will be all wet!

How do you balance and restrict the movement of container B so that it doesn't spill?

vicki · Post by **vicki** » Thu Apr 12, 2007 1:26 pm

Thank you for your help

you were very helpful to me,
I am doing it today with my buddy,
The sites wre helpful to,
We are doing a see-saw basketball theme,
Container A is going to drip into container B,
When container B get really heavy it is going to pull down on the see-saw(type of) and the ball will go in to the net!!!!!!!!!!!!!

Thank you very much for your help