Recent content by xtinch

Ok, I found the solution. I forgot to account for the rotation of the masses around the com. The solution is simply: L_{total} = I_1\cdot\omega_1+m_1*(c_1-c_{total})\times(v_{com}-v_1)+I_2\cdot\omega_2+m_2*(c_2-c_{total})\times(v_{com}-v_2) Thanks for your help and I hope this will help...

Here's an image, m3 is simply a mass that puts the system into rotation. I'm only interested in the Momentum after the collision. Below is a plot of the L calculated with my above suggestion - it's clearly not constant. So m1+m2 fall together as it's basically a box with an attached, freely...

I see, I=I_{COM}+md^2 is the parallel axis thm i mentioned, also I use R_{ig}*I*R_{ig}^T to rotate the MoI. So my final attempt was to rotate the MoI so they coincide with the global coordinate frame, then translate them to the global COM. (Let T(v) be the Matrix that shifts the MoI by the...

I have two 2 rigid bodies with masses m1 and m2 and Moments of Inertia I1 and I2, they are connected by a free rotational joint at some point, their coms lie at c1 and c2. There's gravity. In the beginning both have some angular velocity \omega_i Questions: - Total angular momentum of the...