Here is a question i can't figure out, it's a challange question we suppose to research.. Question: to measure acceleration, a bent arc-shaped sealed glass tube filled wtih water is used. there is a little air bubble inside. Explain the method of measurement in detail, and find the relationship between position of the bubble and acceleration of the tube. i'm not expecting anyone to give me complete answer, but if anyone could point me to the right material (a name of a specific topic/law would be suffice) i would be forever grateful :D I think it should be under hydromechanic.. though not sure what exactly i should be looking at.. thanks alot!