In the center of a square horizontal table with an area of 0.3 square meters, there is a circular container filled with alcohol. The density of alcohol is 0.8 * 10 & sup3; kg / M & sup3;, and the bottom area of the container is 500 square centimeters. Now put a small solid ball with a mass of 0.9 kg and a density of 0.9 * 10 & sup3; kg / M & sup3; into the container Judge whether the ball floats, floats or sinks into the container after it is forbidden? What is the buoyancy of the ball at this time? 84n, I also count 8N Is the land area in the condition useless? Does it have anything to do with that depth? But the answer is 7. This is an exercise in the universal thinking training program. Our teacher only talks about the results, so I have to teach myself.

In the center of a square horizontal table with an area of 0.3 square meters, there is a circular container filled with alcohol. The density of alcohol is 0.8 * 10 & sup3; kg / M & sup3;, and the bottom area of the container is 500 square centimeters. Now put a small solid ball with a mass of 0.9 kg and a density of 0.9 * 10 & sup3; kg / M & sup3; into the container Judge whether the ball floats, floats or sinks into the container after it is forbidden? What is the buoyancy of the ball at this time? 84n, I also count 8N Is the land area in the condition useless? Does it have anything to do with that depth? But the answer is 7. This is an exercise in the universal thinking training program. Our teacher only talks about the results, so I have to teach myself.

The ball will sink into the container because the density of the solid ball is known to be greater than that of the alcohol. V ball = m ball / ball density = 0.9 kg / 0.9 * 10 & sup3; kg / M & sup3; = 1dm & sup3; F floating = ρ liquid V row g = 0.8 * 10 & sup3; kg / M & sup3; * 1dm & sup3; * 10N / kg = 8N. The buoyancy of the ball is 8N