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For those of you who use the IP simulation program: Some of my
students are trying to build a simulation of a rotation problem and
having a
problem. The problem involves a vertical long rod, pivoted on the
upper end. The rod swings down and its lower end collides with wad
of putty. It's supposed to stick to the small putty wad, and then
the rod and putty swing up a bit and then temporarily stop. We
can't get the putty
and the rod to stick together. I've tried setting the elasticity
of both at 0. Does anyone out there know how to make the two
objects collide and stick together? Thanks.