[x3d-public] [x3d] Spec Comment by on 19775-1: Abstract X3D Definitions - V3.3 [Mantis 1180]

[Roy Walmsley]

Hi Doug,

Many thanks for this fifth great comment. I have raised Mantis issue 1180 to
cover this. It is available to Web3D members at
http://www.web3d.org/member-only/mantis/view.php?id=1180.

All the best,

Roy

-----Original Message-----
From: x3d [mailto:x3d-bounces at web3d.org] On Behalf Of Spec Feedback
Sent: 22 September 2017 23:30
To: x3d at web3d.org
Subject: [x3d] Spec Comment by on 19775-1: Abstract X3D Definitions - V3.3

-- Submitter indicates that this comment may be public: *Yes* --

Comment on 19775-1: Abstract X3D Definitions - V3.3

http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/concepts.h
tml#Standardunitscoordinates

-----------------
1. force is/should/could be a derived unit:
force: F = m*a = mass*length/time**2 [kg*m/s**2] Q. if the scene author
specifies mass in slugs and force in newtons, how to treat derived units
like moment of inertia and torque?
a) compute from force OR
b) compute from mass and length
2. why weren't torque and moment of inertia shown as derived units in
derived units table?
torque: force * length [kg*m/s**2 * m]
moment of inertia: mass * length**2 [kg*m**2]

-----------------

Submitted on Friday, 2017,  September 22 - 3:30pm by  (Doug Sanden )
IP: 104.205.111.195

See: http://www.web3d.org/node/1694/submission/1473


_______________________________________________
x3d mailing list
x3d at web3d.org
http://web3d.org/mailman/listinfo/x3d_web3d.org