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Lab Report Making an Object Buoyant by Adding Extra Volume to Displace the Water Necessary
Ships do not sink because of displacement; the ship moves more water than the ship actually weighs.
Archimedes Principle: Any object wholly or partly immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the object.
Density is mass of a unit volume of a material substance, expressed as kilograms per cubic meter in MKS or SI units. Density offers a convenient means of obtaining the mass of a body from its volume or vice versa; the mass is equal to the volume multiplied by the density, while the volume is equal to the mass divided by the density. The weight of a body, which is usually of more practical interest than its mass, can be obtained by multiplying the mass by the acceleration of gravity. Tables that list the weight per unit volume of substances are also available; this quantity has various titles, such as weight density, specific weight, or unit weight. D = mass/volume
Displacement is distance moved by a particle or body in a specific direction. It is a vector quantity, possessing both magnitude and direction. The distance traveled by the point depends on the path that it follows; it will be equal to the magnitude of the displacement only if the path is straight. In mechanics, it is frequently necessary to distinguish between the distance that a point moves--or through which a force acts--and the displacement of the point or the force.
The purpose of this experiment was to make an object buoyant by adding a sufficient amount of extra volume to displace the water necessary.
My hypothesis was that the additional amount of displacement needed would be .54 liters. The needed amount of displacement was found by first finding the difference between the mass and displacement. The solution was the difference in mass and the weight of the water being moved. This solution was divided by the density of the salt water at Seaquarium, which was 1.03 kilograms.
The materials that were needed to conduct this experiment was a concrete or lead object, a scale to weigh the object, string, empty bottles, sea water, a graduated cylinder for measuring the water accurately, and buckets filled with sea water.
The procedure followed to perform the experimentation is as follows:
1. Choose a concrete or lead object and weigh it on a scale.
I am doing this experiment to find the density of aluminum foil to see if it floats or sinks when placed in water. I hope to find how the density of aluminum foil changes when weight is added to the foil. I hypothesize that the boat will hold 20 pennies before sinking.
Archimedes principle says that the magnitude of the buoyant force always equals the weight of the fluid displaced by the object. This buoyant force always acts upward through the point that was the center of gravity of the displaced fluid. In the case of floating objects the buoyant force is equal to the force of gravity on the object. Knowing that the change in pressure is equal to the Buoyant force per unit area (ΔP = B/A) we see that B = (ΔP)A and ΔP = ρgH where ρ is the density of the fluid g is the acceleration due to gravity and H is the height of the fluid displaced.
The units are grams for the mass, centimeters cubed for the volume and grams/ centimeters cubed for the density. For the sphere, the mass was 242.4 g and the volume was 47.7 cm^3, which makes the density of 5.08 g/cm^3. For the cylinder, the mass was 103.2 g and the volume was 34.3 cm^3, which makes the density of 3 g/cm^3. For the first rock, the mass was 334.1 g and the volume was 118 cm^3 which makes the density of 2.83 g/cm^3. For the second rock, the mass was 46.6 g and the volume was 20 cm^3, which makes the density of 2.33 g/cm^3. For the water, the density will always be 1 g/cm^3 which means the mass and volume will always be the exact same number.
The purpose was to crest five separate layers of colored sugar water. The concept of the lab is to find the density of the colored sugar water by dividing mass over volume. Mass is a measure of the amount of matter in an object. Volume is the quantity of 3 dimensional space occupied by a liquid, solid or gas. Density is the measurement of an object's mass per unit of volume. The lab was setup to study the concept on how to calculate the density by mass divided by volume. The independent variable is the mass of the sugar. The dependent variable is the density of the sugar H2O. The constant variable is the volume of the H2O.
To investigate the relationship between the air pressure in a ball and the bounce height of that ball where the drop height (gravitational potential energy), temperature and location are kept constant.
Archimedes discovered Density when he was set on a mission to figure out if a craftsman had given the king a pure gold crown or had defrauded him with silver instead. Archimedes pondered this when he was in a pool. When he slipped himself into the pool he realized that some water had spilled over. Archimedes then had an epiphany and realized that the amount of water that spilled over was equal in volume to the space that his body took up. Archimedes then applied this epiphany to differentiating whether the king's crown was silver or gold. Archimedes put the Craftsman's crown and a pure gold crown of the same mass in two tubs of water. He observed that more water spilled over the sides of the tub when the craftsman's crown was submerged.
Why do people care about density? People care about density because if you wanted to figure out for a project, it's one of the only way to find out which is more dense without tools. Another reason people care is because it is very interesting to have different colored water stack up like blocks. Density is also one of the coolest experiments you can do with stuff laying around your house, so go try it!
Density is how much mass is in a certain volume. You can calculate density by dividing mass by volume. Water's density depends on its temperature and salinity. Cold water with a high salinity is more dense than warm water with a low salinity.
To set up a model for this experiment first of all I have to make a
For my science fair project, I have decided to answer the following question: “How heavy is a bubble?” I chose this project because it deals with physics, a type of science that I enjoy, and because I love making bubbles. When doing this project, I have to find how the size of a bubble relates to how fast it falls. In order to do this project, I must make something to create the bubbles, then record how long it takes each one to fall. The rest of this paper will show the research I have put into my science fair project. It will also explain how I will eventually answer my main question: “How heavy is a bubble?”
The concept of buoyancy states that the upward force of an object immersed inside a fluid is equal to the amount of weight of the fluid it has displaced. The concept is also known as the Archimedes’ principle. After the mathematician, inventor and physicist Archimedes discovered it(Buoyancy - Concept, How it works 2014).
Two or more forces acting on a body in different directions may balance, producing a state of equilibrium. For example, the downward force of gravity (see gravitation) on a person weighing 200 lb (91 km) when standing on the ground is balanced by an equivalent upward force exerted by the earth on the person's feet. If the person were to fall into a deep hole, then the upward force would no longer be acting and the unbalanced force of gravity would accelerate the person downward. If a body is not completely rigid, then force acting on it may change its size or shape. Scientists study the strength of materials to anticipate how a given material may behave under the influence of various types of force.
The ballast tanks help the submarine to control its buoyancy. Air is less dense than water. Therefore, the submarine will float when its ballast tanks are filled with air. However, when the ballast tanks are filled with water, the submarine becomes denser and it sinks.