a raft of wood density 600 kgs /m3 of mass 120kgs floats in water,how much weight can be put on the

Let's say the required weight is W and raft's volume be V.

Weight of raft + weight required to sink it = Buoyancy force.

ρ_sVg + W = ρ_wVg

V = 120 kg/ 600 kg/m³ = 1/5

W = ρ_wVg - ρ_sVg = (ρ_w - ρ_s)Vg = (1000-600)x(1/5)x10 = 800 N.

Regards,

Team,

TopperLearning.