posted by Courtney .
Can you please help me solve this lab:
Design an item no bigger than a 35 mm film conatiner that will float at the 400 ml mark in a 1000 mL graduated cyllinder with 800 mL of water in it. The item can only be made from "trash", recycled items and common household goods like paper clips, rubber bands, ziplock bags, balloons, etc.
I'm trying to perfect putting paper clips into a balloon, but it's hard. Does anyone else have other ideas on how to make this work? Other than the balloons I've tried putting things like paper clips, staples, beads, etc. in the film container so the container will float and the other material will make it sink, but I've tried for hours and it's hard to perfect these. Any other suggestions?