What is the buoyancy of a cubic kilogram of wood with a mass of 1kg and a density of 0.4 * 10 Format: known seek answer

What is the buoyancy of a cubic kilogram of wood with a mass of 1kg and a density of 0.4 * 10 Format: known seek answer

Known: M = 1kg, P = 0.4x10 ^ 3kg / m ^ 3
Find: F =?
Because when the wood is in water, buoyancy equals gravity
That is: F = g = mg = 1 * 9.8 = 9.8N
A: the buoyancy is 9.8N