There is a thin-walled cylindrical container with a mass of 1 kg and a bottom area of 1 × 10-2 M2 on the horizontal ground. The container contains water with a mass of 4 kg. ① calculate the volume of water v. ② calculate the pressure of the container on the ground P. ③ now immerse a block in water, and the water does not overflow. If the increase of the pressure of the container on the ground is equal to the increase of the pressure of the water on the bottom of the container, the density of the block is___ Kg / m3

There is a thin-walled cylindrical container with a mass of 1 kg and a bottom area of 1 × 10-2 M2 on the horizontal ground. The container contains water with a mass of 4 kg. ① calculate the volume of water v. ② calculate the pressure of the container on the ground P. ③ now immerse a block in water, and the water does not overflow. If the increase of the pressure of the container on the ground is equal to the increase of the pressure of the water on the bottom of the container, the density of the block is___ Kg / m3

① V = m, ρ = 4kg1.0 × 103kg / m3 = 4 × 10-3m3; ② pressure of the container to the ground: F = g = mg = (1kg + 4kg) × 9.8n/kg = 49n, pressure of the container to the ground: P = FS = 49n1 × 10-2m2 = 4900pa; ③ if the mass of the object is m, the increase of the pressure of the container to the ground: △ P1 = △ FS = MGS, the increase of the pressure of the water to the bottom of the container: △ P2 = ρ water △ Hg = ρ water V matter SG, from the title, △ P1 = △ P2, namely: MGS= Answer: ① the volume of water is 4 × 10-3m3; ② the pressure of the container to the ground is 4900pa; ③ the density of the block is 1.0 × 103kg / m3