Recent content by Dhl

I guess this teacher has either done some calculations himself, or, more likely, he has just tried it and found it impossible to throw a balloon 80 ft. with his slingshot (I mean, it's unlikely he would allow to do that if he were not sure he wouldn't get hit...). Thus, the solution is to bring...

The inertia matrix I posted was wrong, it should be: I = \left(\begin{array}{ccc}\sum_{i=0}^n m_{i}( r_{iy}^2+r_{iz}^2)&-\sum_{i=0}^n m_{i} r_{ix}r_{iy}&-\sum_{i=0}^n m_{i} r_{ix}r_{iz}\\-\sum_{i=0}^n m_{i} r_{ix}r_{iy}&\sum_{i=0}^n m_{i}( r_{ix}^2+r_{iz}^2)&-\sum_{i=0}^n m_{i}...

The Chris Hecker tutorial helped me a lot... articles explaining physics for use in games seem more understandable to me than physics papers. However, there was a thought that embarassed me: Assuming an object of two particles with the same mass, these will have the following vectors from the...

thanks a lot. :) so, if i have a body of n particles (which can rotate freely), and two forces F1 and F2 that act on two of those particles, i could calculate rotational acceleration by: r_{1} = vector from CM to particle 1 r_{2} = vector from CM to particle 2 r_{1} \times F_{1} +...

hi! i've been pondering about rotational motion (of a rigid body). I've been doing some internet research on it, but i have some trouble putting things together... i want to apply forces on the particle parts of a body. one website told me that when you know the axis of rotation, you...