pmpd.mass 1D mass. This object's inlet need forces (float), and outlet it's position (float). All forces send to it's inlet are add together. A bang allow the mass to compute it's new position, and to output it. The mass can move due to it's inertia. ÒmassÓ objects react like a point mass. It takes forces at its input, and output its position. It move according to the Newtonian dynamics: ·F = m ?. ÒmassÓ objects got inertia, but they are punctual (they can not rotate). For each time iteration, they make the summation of forces apply to their inlet to know the acceleration to have (positive or negative).

from the library : PMPD Format : External Environment : max freeware Max 4.5 / 4.x http://www.mathieuchamagne.com/?p=13 http://drpichon.free.fr/pmpd/