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. Floating Objects displace an amount of fluid equal to the volume of the submerged part of the object.