### Author Topic: Airdrag  (Read 6699 times)

#### ahmedelshfie

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##### Airdrag
« on: June 16, 2010, 01:50:52 am »
This following applet is Airdrag
Original project Airdrag
Thanks to our prof Hwang for him help he always help.

Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
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Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!
« Last Edit: June 16, 2010, 07:45:05 pm by ahmedelshfie »

#### ahmedelshfie

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##### Re: Airdrag
« Reply #1 on: June 26, 2010, 01:59:11 am »
In fluid dynamics, drag (sometimes called air resistance or fluid resistance) refers to forces that oppose the relative motion of an object through a fluid (a liquid or gas). Drag forces act in a direction opposite to the oncoming flow velocity.
Unlike other resistive forces such as dry friction, which is nearly independent of velocity, drag forces depend on velocity.

For a solid object moving through a fluid, the drag is the component of the net aerodynamic or hydrodynamic force acting opposite to the direction of the movement. The component perpendicular to this direction is considered lift. Therefore drag opposes the motion of the object, and in a powered vehicle it is overcome by thrust.

In astrodynamics, and depending on the situation, atmospheric drag can be regarded as an inefficiency requiring expense of additional energy during launch of the space object or as a bonus simplifying return from orbit.

#### ahmedelshfie

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##### Re: Airdrag
« Reply #2 on: July 17, 2010, 01:37:46 am »
A new version from Airdrag by Ahmed Help in code prof lookang.

Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
• Please feel free to post your ideas about how to use the simulation for better teaching and learning.
• Post questions to be asked to help students to think, to explore.
• Upload worksheets as attached files to share with more users.
Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!

#### ahmedelshfie

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##### Re: Airdrag
« Reply #3 on: August 18, 2010, 12:46:51 am »
This applet is Projectile Motion with Air Drag design by prof Hwang,, Modified by Ahmed.
Applet design using JDK1.0.2.
Original applet on Projectile Motion with Air Drag