[TowerTalk] Where does the element go?

[Bill Turner]

ORIGINAL MESSAGE:

On Thu, 23 Nov 2006 21:17:17 -0500, "Ted Bryant" <w4nz at comcast.net>
 wrote:

>If I remember my Statics & Dynamics correctly, the gravitational forces on a horizontal element(and
>the resulting torque on the boom) are the same whether it's mounted above or below the boom.  For a
>symetrical element mounted at its center, rotational torque due to gravity should very close to
>zero.
>
>I suspect the decision whether to mount the element above or below the boom is affected more by
>other factors.

------------ REPLY FOLLOWS ------------

That is true as long as the elements above the boom are perfectly
centered above the boom, but when there is wind or other twisting
force applied, then gravity begins to have a say too.

Bill, W6WRT