Demos by PIRA
1K10 Dynamic Torque
1K10.30Static equilibrium for a rope on a spool. Same as A+55+5.
1K10.30Rolling spool: String on spool is pulled at various angles.
1K10.50Disk (weighted off-center) rolls up inclined plane.
1K20 Friction
1K20.15Weighted wood block dragged horizontally by force sensor.
1K20.35Blocks, with various surfaces slide on an inclined plane.