How Surface Area Affects the Buoyancy of Wood

May 5th, 2015
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The upward force on an object that is in water that allows it to float is called buoyancy. The buoyant force is always equal to the weight of the water displaced by the object in the water. This force was discovered by Archimedes, who was in his bathtub when he wondered why objects seemed lighter when he held them under the water.

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How Surface Area Affects the Buoyancy of WoodIntroduction: The upward force on an object that is in water that allows it to float is called buoyancy. The buoyant force is always equal to the weight of the water displaced by the object in the water. This force was discovered by Archimedes, who was in his bathtub when he wondered why objects seemed lighter when he held them under the water. He found out that if an object is lighter than the weight of the water it displaces, it will float, but if it is heavier, it will sink.The force of buoyancy is important in many different areas, and especially in the making of ships. The surface area that is touching the water of the ship is very large, due to the shape of the hull, and that, beside the density of the ship, is what keeps the ship floating. An important example of how surface area affects buoyancy is when people float in the water. Everyone knows that it is much easier to stay afloat when we are lying on our backs than when we are in a standing position in the water. But how does the surface area of an object affect its buoyancy?Aim: To investigate how changes in the surface area of pieces of wood of the same mass affects t

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