Archimedes Principle - Example 2

Example 2:
An iron block which has volume 0.3m³ is immersed in water. Find the upthrust exerted on the block by the water. [Density of water = 1000 kg/m³]

Answer:

Density of water, ρ = 1000 kg/m³
Volume of water, V = 0.3 m³
Gravitational Field Strength, g = 10 N/kg
Upthrust, F = ?

$$\begin{array}{l}F=\rho Vg\\ F=(1000)(0.3)(10)=3000N\end{array}$$