Re: "acceleration due to gravity"

[Jim Green <JMGreen@SISNA.COM>]

At 18:03 25 01 2001 , you wrote:
> Kindly help me understand the difference between
>         F=ma and F=mg.

We have covered this issue many times in other settings:
eg Does E equal mc^2 or is it that E _is_ mc^2 .

In the present case

F=ma means that if I calculate/measure F and calculate m x a they will be
equal.

F=mg means that the force _is_ m x g.

Again, mg is a force, ma is not.

It would seem to me that this issue should have been long since settled.  I
must be missing something here.


Jim Green
mailto:JMGreen@sisna.com
http://users.sisna.com/jmgreen