Mark Rand wrote:
On Tue, 23 Dec 2003 18:20:06 -0800, "Ken Davey" wrote:

snip

Now; For a clue as to why I think this is true I would like to pose another
question.
At what distance from the center of the earth, would the block be
'heaviest'?
There has to be a 'simple' answer for this.

Objects are heaviest at the surface of the earth. IIRC Gravity is proportional
to distance-from-centre/radius below the centre and proportional to
distance-from-centre/radius^2 above the centre.

Given a homogenous spherical earth.
If the boat is in a mountain lake, it may work the other way.