"Robert M. Gary" wrote in message
oups.com...
However, I like you're use of the word force (which is really
acceleration since God knows that F=ma).

Although acceleration is indeed proportional to force, the difference
between them is important to pilots.

* Because Va limits *acceleration*, Va becomes lower (hence more
restrictive) when the plane weighs less.

* Because Vno limits *force*, Vno is independent of the plane's weight.

--Gary