Density & Buoyancy

Density

What ρ = m/V means

  • Primary school
  • about 4 min
  • 1 of 3 in the family
Not started
volume V = 100 cm³mass m = 200 gρ = 2.00 g/cm³= 2000 kg/m³↓ heavier than water≈ like plasticine
ρ=mV=200 g100 cm3=2.00 gcm3\rho = \dfrac{m}{V} = \dfrac{200\,\text{g}}{100\,\text{cm}^3} = 2.00\,\tfrac{\text{g}}{\text{cm}^3}
2.00 g/cm³ × 1000 = 2000 kg/m³

Density tells how much mass fits into a given volume. The same dots in a wider box = lower density; more dots in the same box = higher density. 1 g/cm³ = 1000 kg/m³.