Re: Pounds and Kilograms
- To: mathgroup at smc.vnet.net
- Subject: [mg103641] Re: [mg103613] Pounds and Kilograms
- From: "David Park" <djmpark at comcast.net>
- Date: Thu, 1 Oct 2009 06:38:01 -0400 (EDT)
- References: <12062492.1254302074540.JavaMail.root@n11>
It appears that WRI has divided units of mass into two groups, one that they call mass and one that they call weight. They have the same BaseSI units. WRI does not give us definitions of the units. I think the ones they call weight are defined by measuring the force at the surface of the earth and dividing out the acceleration of gravity. Otherwise, it is a little confusing that the units of mass have been divided into two different lists. If you want units of force use KilogramForce, Poundal or PoundForce. Needs["Units`"] Needs["PhysicalConstants`"] Convert[Pound AccelerationDueToGravity, PoundForce] 1. PoundForce David Park djmpark at comcast.net http://home.comcast.net/~djmpark/ From: Kevin J. McCann [mailto:kjm at KevinMcCann.com] The Units Package has Pounds and Kilograms. Pound is listed as a unit of weight, Kilogram as a unit of mass; however, Convert[Kilogram,Pound] 2.20462 Pound Seems inconsistent. (I hate units.) Kevin