On buoyancy

This is an experiment that Martin brought to Ratzeburg and that he let me use on my blog: Using a beam balance to talk about buoyancy.

So at first we have two objects hanging on the beam balance, a heavy one with a large volume, and a lighter one with a smaller volume.

IMG_2527

As we lower the beam balance towards the water, the large object starts floating! Whereas the other one does not.IMG_2526

And in fact, the small object sinks and the larger one keeps floating.IMG_2525

What a great experiment to talk about density and buoyancy!