Chapter 13: Liquids – Pressure, Buoyancy, and Fluid Principles

A hydraulic lift in an auto repair shop uses Pascal’s Principle to lift cars. If a mechanic applies a force of $200\ \mathrm{N}$ to a piston with an area of $0.01\ \mathrm{m}^2$, what is the pressure transmitted to the fluid? (Assume no losses.)

A diver descends to a depth of $30\ \mathrm{m}$ in seawater ($\rho = 1025\ \mathrm{kg/m}^3$). What is the gauge pressure due to the water at this depth? (Use $g = 9.8\ \mathrm{m/s}^2$.)

A block of wood with a density of $600\ \mathrm{kg/m}^3$ floats in water ($\rho = 1000\ \mathrm{kg/m}^3$). What fraction of the block’s volume is submerged?