Question

help with an manufacturing question about buoyancy forces.

Answer 1

A 92% aluminum 8% copper alloy casting is made in a sand mold using a sand core that "weighs" 20 kg. Determine the buoyancy force, in Newtons, tending to lift the core during pouring. The density of sand is 1.6 g/cm^3 or 1600 kg/m^3.so using the numbers i have i found\[F_b=g \rho V=(9.8)(1600)(0.0125)=196N\]I don't know what to do now....