sábado, 28 de mayo de 2011

Physic Lab 3: Bernoulli´s Principle


Practice #3
Bernoulli's principle can be derived from the principle of conservation of energy. This states that, in a steady flow, the sum of all forms of mechanical energy in a fluid along a streamline is the same at all points on that streamline. This requires that the sum of kinetic energy and potential energy remain constant. If the fluid is flowing out of a reservoir the sum of all forms of energy is the same on all streamlines because in a reservoir the energy per unit mass (the sum of pressure and gravitational potential ρ g h) is the same everywhere.

Material

-Dryer
-Styrofoam balls
-Cans



Questions

1. Explain the Benoulli´s principle
Bernoulli´s principle states that for an inviscid flow, an incrase in the speed of the fuid occurs simoustaneously with a decrease in pressure or a decrease in the fluids isotential energy.

2. Describe what you saw in the lab.
The balls were raised and kept in the air when weto put the dryer on, until we turned off the dryer the balls were falling.
3. What happened with the ping pong ball?
The ping pong ball stayed suspended in the air.

4. Why happened this?
Because of the air of the dryer the and the lightness of the balls, cause that the balls kept in the air

5. What happened with the cans?
When we blow in the middle of the cans they got joined.



Results & Images




Members of the Team
Carlos Abreu Espinoza
Larissa Ch
Diego Herrera Delgado
Erika Estrada
Jonathan Vazquez Jimenez
Leslie Melissa