what physics principles used to create own boat?

Question

for physics project.

Answer 1

Bernoulli principle if you planning create a sailboat.

Answer 2

1

Answer 3

This is one of the great beauties, and paradoxes of physics. While you can work out all kinds of principles & formulas you need to build a boat, people have built boats for millenia even with no understanding of the physics that go into the construction. If you want to design a supersleek racing boat, then you need to whip out the engineering tables, but you can build a pretty decent boat simply by trial and error.

Think about a frisbee. The equations that describe the movement of a frisbee are incredibly complex. But two kids playing in the park don't need to understand how the frisbee flies, they just *know* where it's going to go. Heck, even dogs can catch frisbees.

Isn't science wonderful?

Answer 4

You will need to learn about boyancy.

The basic pricipal is this:
If you have a ship, the amount of water that the ship will displace is equal to the weight of the ship. So, you can find the volume of water that will be displaced by doing the following

pgV=W
p=density of water= aprox. 62.4 lbf/ft^3
g=32.2 ft/s^2 (assuming your boat will opperate on earth)
V= volume of water displaced.
W = weight of boat when fully loaded.

The V that you calculate will be dependant on the weight of the total loaded boat. Be sure to estimate your loaded boat weight and then add some extra weight for safety (maybe increas by 50%.). From the V that you calculate you will be able to determine the volume that your boat hull needs to be. In addition, you can divide this volume by the length that you want your boat to be to determine the area of a typical cross section. Any additional volume is simply bonus and will allow your boat to sit higher in the water. (note that you will want it to set a certain amount in the water so that the boat is stable.)

Good Luck!

Answer 5

In general:

Hull length determines maximum speed called hull speed, unless the boat can plane.

Hull shape determines stability, water resistance, ability to plane, behavior in turning.

Rudder size, position influence how the boat turns.

How is the boat propelled?

Sailboats are all about physics!

The sail is an airfoil. Lift versus pushing of wind depending on angle of boat to the wind.

Wind speed+ boat speed=apparent wind

Wind on sail creates angle of heel (tipping). Leeway (sideways slippage through the water)

Sail size, and placement influence helm (weather helm, lee helm) weather helm, boat naturally turns into wind.

The list goes on and on.

Answer 6

Guerilla Radio through Rage adverse to The device Brass Monkey through The Beastie Boys Lionheart through Blind father or mom Bullet With Butterfly Wings through The Smashing Pumpkins chicken through Alice In Chains sturdy question.

Answer 7

Archimedes principle of boyancy. Density of air. Density of water (ie salt or fresh water)

Displacement.

Hydrodynamics (hull design ie W, V, double V,)

Answer 8

Principles of floatation
Newton's 3rd law
Some fluid mechanics

Depending on whether you use a propellor, you may need to read that up as well.
If you use a sail, read up on how to leverage air flow as well

These should get you started on your physics project. :-)

Answer 9

the principal is surface tension

Answer 10

displacement.