Question

An oak barrel s filled with water and then tightly sealed. A hole is drilled in the barrel' top and narrow open tube is fitted securely into the hole. Water is then slowly added to the tube. When the height of the water column reaches a certainpoint, the barrel bursts apart. Explain this occurenct using the principles of fluid physics,

Answer 1

Material

- a wine barrel (found on eBay for 50 EUR) - make sure to get one with a lid and a cork (usually it's a special cork located in the belly part of the barrel)

- a rain water collector to hook up to the gutter (found on eBay for 19 EUR - but otherwise available in nearly all DIY shop) - I choose that model because the collected water would come out via a little tube and not an "open-air" half-pipe

- driller

- flat wood drill heads

- some screws

- an old piece of board about the length of the barrel's lid

- a handle