Density and pressure

• Density = mass/volume

  $\rho$ = m/v
• • The density of an object can be found by measuring the mass and volume and applying the formula above to calculate the density.
  • For a regular object use a ruler to measure the lengths needed to determine the volume.
  • For an irregular object submerge it in water and measure the displaced volume.
  • Measure the mass of either type of object using a measuring balance.
• Pressure = force/area

  p = F/A
• Pressure in liquids acts equally in all directions as long as the liquid is not moving.
• Pressure difference = height x density x gravitational field strength

  p = h x $\rho$ x g