[Sidefx-houdini-list] mass

Koya Masubuchi msbck0mp at gmail.com
Sat Jun 30 06:52:46 EDT 2018


You're right! Thanks!

> On Jun 30, 2018, at 7:32 PM, Olivier Jeannel <facialdeluxe at gmail.com> wrote:
> 
> 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
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