This week as I was reviewing for Physics Quizzes I realized that I didn't remember much about buoyancy, so I've decided to use this topic for this week's blog. This is a picture of a boat sailing in Pearl Harbor. This boat is obviously floating, which, in other words, means that the buoyant force pushing up on it from the water is equal to the weight of the water that the boat displaces. Buoyant force can be calculated by calculating the weight of the displaced water by using the density formula (density of water is 1000 Kg/s and the volume is the volume of the boat beneath the water) and then multiplying this mass by 9.8 m/s^2 (gravity).
To calculate what percent of the boat is underwater using the fact that the weight of the displaced water and the buoyant force are equal. Density times volume can be substituted for the mass and then a ration between volume and density can be found, telling what percent of the boat is underwater.
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