28
May
Determine how much weight can be supported by boat hulls of various volumes and how this relates to the density of water. This will give you the hulls density in grams per cm³.
Include each boat on your graph.
How much weight can your boat float. This will give you the hulls density in grams per cm³. Record your results in the data table in your lab notebook. Make a line graph of buoyancy.
To do this put the weight supported by the boat in grams on the y-axis and the boat hull volume in cm³ on the x-axis. Include each boat on your graph. The force of gravity will be determined by the tin foils weight and the weight of all the pennies in your boat.
The buoyant force is the mass of the water typically displaced by your boat. The boat will continue floating as long as the buoyant force is greater than the gravitational force and you should avoid overloading your boat to prevent it from tipping over or leaking. Find out how much 10 or 20 pennies weigh together.
Calculate the average weight of a penny by dividing the total weight by the number of pennies. Now for each boat you can multiply the number of pennies it could support by the average weight of a penny to convert your. Your canoe will float 1256 kg of total weight mass including the weight of the canoe air people coffee cups paddles etc.
But at 1257 kg it will flood and sink. So 500 kg is probably a safe limit minus all of the above. How Much Weight Can Boats Float.
If playback doesnt begin shortly try restarting your device. Videos you watch may be added to the TVs watch history and influence TV recommendations. Even though the larger hull supports more weight the larger hull also has a larger volume and both hulls should roughly have a density of 1 gram per cubic centimeter right before sinking.
Your densities may not have been exactly this but may have ranged between 07 to 13 grams per cubic centimeter. Facts I learned from this experiment. The volume of boat affects how much weight it carries.
The boat floats because its density is less than the density of water. In order to make something float the density must be adjusted to be less than the water. If we put 10 pennies in the boats they will still float but I think more than 20 will make it sink.
Use the aluminum foil and tape to construct at least 5 boats with different sizes and shapes. Assign a number to each boat. Fill bucket with water.
When put the pennies into the boat hull the pennies that can be supported of the boat hull for Boat 1 bigger rectangular prism is 13 pieces which the weight that can be supported is 5434grams. For Boat 2 bigger triangular prism is 13 pieces which the weight that can be supported is 5434grams. For Boat 3 smaller rectangular prism is 8 pieces which the weight that can be supported is 3344grams.
How Much Weight Can Your Boat Float. A Science Fair Project. The problem investigated was the amount of pennies a boat can hold depending on the volume of the boat.
The hypothesis stated that if the volume of boat is increased. How Much Weight Can Your Boat Float. Science Project Boat Hull Density Project.
Determine how much weight can be supported by boat hulls of various volumes and how this relates to the density of water. The Maximum Gross Load is the total weight your boat can handle including people equipment stores fuel engine assembly and steering controls. If your boat doesnt have a Capacity Plate you can calculate the number of people you can safely take onboard using the following equation.
Using ten straws three inches of duct tape and ten inches of plastic wrap can you make a boat that can hold 25 pennies without sinking. Materials Needed per student. 10 straws 10 inches of plastic wrap 3 inch strip of duct tape 25 pennies tub of water This packet con.
With each adjustment to the boat take a picture or sketch. Weigh a penny and record the weight. Add one penny at a time to the boat and record the results including the change in the water-line until the boat sinks.
Make adjustments to your boat in order to allow all 10 pennies to float. Take pictures of or sketch any adjustments in the boat. Analyze the data to conclude how the shape of a boat affects its density and its ability to carry weight.
Think about a bottle a cup or a bowl or any other similar dish. If you fill up your sink and place an empty container on the surface it will float. However as you add water to it the heavier the object becomes creating more displacement.
Ultimately there will be too much weight in. Give the groups approximately 15-20 minutes to design a boat that will float on water and transport the penny cargo. The goal of the competition is to design a boat that will hold the most cargo without sinking the boat.
Give very little instruction during this time. Encourage youth to experiment with the boats and test out how much cargo it can hold. How to calculate how much flotation your boats need.
The following are simplified methods to calculate the amount of flotation needed for a boat. The notation used such as Boat Weight W b is the same as used by ABYC the Coast Guard and NMMA so if you have problems you can call them and they will recognize what youre talking about. Now most boats dont operate in quite the same way as submarines.
They dont sink but they dont exactly float either. A boat partly floats and partly sinks according to its own weight and how much weight it carries. The greater the total of these two weights the lower it sits in the water.
Multiply the volume of your boat 54 cubic feet by 624. The result 33696 pounds tells you the weight your boat when its full of water. This is the tipping point called neutral buoyancy where 0 percent of the boat would be above water To ensure you keep your boat above water read the US.
Coast Guard placard on the inside of your boats transom that lists the maximum allowable load. No matter how thin we are we all still have some amount of fat in our bodies which is less dense than water. How easily we float depends largely on how much body fat we have.
We can also float better if we fill our lungs and hold our breath. You can also ask your students if it is easier to float in a lake fresh water or in the ocean salt water. Freshwater weighs about 62 pounds per cubic foot of water.
We will use this information to help determine the weight capacity of your pontoon boat. To do this you just take the overall volume of your boats pontoons and multiply it by 62 lbs. This gives you the weight capacity for one pontoon.
Repeat steps 1 and 2 until your boat will float with the weight you specified. Divide the volume of wood in cubic inches v by the surface area of the rectangular hull in square inches s usually 6 in x 25 in 15 in2 to get the height of the hull in inches h. In symbols this is h vs.
Cut your hull from your. For a boat to float it needs to weigh less than the same amount or volume of water. To make this happen engineers must build boats so that they have giant pockets of air inside them.
If you think about a huge cargo ship or a cruise ship you will realize that most of the ships interior is open space. For example if you had a 1000 pound boat it would need to displace more than 1000 pounds of water when it is in the ocean in order to float.