Recent content by pL1

We know the pendulum in gravitational field. Take a pendulum in the gravitational field with a rigid yet massless connection between mass and rotation axis with the rotation axis being the top of a vertical spring. The spring is massless and confined to vertical movement. Let the connection be...

Hello, consider this: http://www.alice-dsl.net/l.hansen/overdetermination.png See this image? Every point in space can be reached for the mass by the springs motion plus the springs rotation and then there's the pendulums rotation additionally. Not solvable analytically but numerically...

Hello, in order to numerically solve a physics problem I think I need to add 2 (infinitesimal) rotations of one and the same segment each around a different point in 2D space in one iteration of numeric approximization. How does this addition work out? Is it the sum of the vectors connecting...

Hello, I was actually unable to write down the motion equations for the angular momentum. However I have derusted myself a bit and wrote down the Euler-Lagrange DE system. Now I don't seem able to solve it. It may even be unsolvable as the setup incorporates a gravitational pendulum of...

This sounds good! Thank you! And thank you for the welcome! pL1

Hello, I want to simulate a plane thin rectangular board attached to one spring below at each end. (So there are 2 springs in total.) The springs span the entire edges. The spring-board-attachment is a rotatable axis. I can't find out how the force acts on the springs. I don't know whether...

my professor used to say the only true answer is: entropy is equilibrium in phase space. If there are particles, their locations and momenta are equally distributed across the whole range (given a cutoff before infinity). Of course there is entropy in computer sciences as well. Perhaps one...