You may have noticed, all around Scienceblogs.com, that we have started our traditional annual fundraiser - helping fund science and math projects in schools around the country, mainly focusing on schools in low-income areas where most of the students get free lunches and there is not much support for "extras" which should be normal part of every school - the basic supplies for math and science instruction.
I am right now having a technical problem with my side-bar widget, which I will install as soon as I can. But in the meantime, check out the Scienceblogs.com leaderboard, and pick some of the projects from my list. Then click on "Fund this project" button and make some kids very happy:
More like this
Friction in Line Rider
Is there friction in Line Rider? Does it function as physics would expect? To test this, I set up a simple track:
Scale of the Line Rider
First, we assume that the line rider is on Earth and for low speeds will have a free-falling acceleration of 9.8 m/s2. Next, an arbitrary distance is selected. In this case the length of the sled is chosen to be 1 LU (Linerider Unit).
**Pre Reqs:** [What is a Force](http://scienceblogs.com/dotphysics/2008/09/basics-what-is-a-force.php)
**Pre Reqs:** [Work-Energy](http://scienceblogs.com/dotphysics/2008/10/basics-work-energy.php)