Fluids:
Animation 3

Description:

The simulation below is color coded as follows: blue is water , red is oil, and brown is a wood block initially floating at the interface. 

As oil is drawn off, only one situation is "physical" (i.e. would occur in the real world). Which is it?

Start

Credits:

Physlet problem authored by Peter Sheldon and modified by Mario Belloni and Stuart Leinoff.