[Sidefx-houdini-list] mass

Olivier Jeannel facialdeluxe at gmail.com
Sat Jun 30 06:32:51 EDT 2018


In real world without air friction.

On Saturday, June 30, 2018, Koya Masubuchi <msbck0mp at gmail.com> wrote:

> Hello Gary,
>
> How about other force? not Gravity Force. It works.
>
> Yeah, Mass affects force. And force affects acceleration.
> But It doesn't affect the force that was generated by universal
> gravitation.
>
>
> "If an object has twice the mass, it receives twice the force.
> However, because an object of twice the mass requires twice the force to
> experience the same net acceleration,
> the Gravity Force can be thought of as a raw acceleration."
>
> http://www.sidefx.com/docs/houdini/nodes/dop/gravity.html
>
>
> It's something like Gravity Force node always ignores any object's mass.
> Because it doesn't matter how big the mass that an object has.
> In the real world, everything falls down at the same speed even if its mass
> aren't the same.
>
> Hope this helps.
>
>
>
> Koya Masubuchi
>
>
>
> 2018-06-30 11:10 GMT+09:00 Gary Jaeger <gary at corestudio.com>:
>
> > Am I crazy? I haven’t done much with basic Houdini particles, but I’m
> > messing around with them and I can’t figure out mass. For instance, a
> torus
> > that sits above a ground plane. Particles (via the Source Particle
> Emitter
> > tool shelf) from the torus are bouncing on the ground plane. Now I want
> to
> > increase the mass of the particles. Um… I can add a popproperty and set
> the
> > mass, but it has no effect (or on any collisions) that I can see. It DOES
> > seem to have an effect on pop forces, but not collisions.
> >
> > What stupid thing am I doing?
> >
> >
> > Gary Jaeger / 650.728.7957 direct / 415.518.1419 mobile
> > 249 Princeton Avenue / Half Moon Bay / CA 94019 <
> > https://www.google.com/maps/place/249+Princeton+Ave,+Half+M
> > oon+Bay,+CA+94019,+USA/data=!4m2!3m1!1s0x808f73cae8ec3c2b:0x
> > 8f4550d52ed8e890?sa=X&ved=0ahUKEwjP68e-m6_MAhUX4WMKHRoSDm4Q8gEIHDAA>
> > http://corestudio.com <http://corestudio.com/>
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