Forces and Fluids Forces and Fluids Fluids can flow . Gases are fluids. Solids cannot flow .
Fluid pressure increases with depth.
Water is incompressible, so density is constant with depth in fluid. Springs submerged in a fluid Pressure increases with depth in a fluid. At any depth the Pressure is the same in all directions. Sketch a force diagram for the rock falling in air. Sketch force diagram for the rock sinking in the lake.