On Jan 16, 11:38*pm, Harry K wrote:
On Jan 16, 6:37*pm, wrote:

On Sun, 16 Jan 2011 19:16:03 -0600, dpb wrote:
RBM wrote:

They're also not pointing vertically directly below the load, either;
only the force in the direction of lift is actually vertical.

*Not true. Not at all. You need to study your basic physics - simple
levers, classes and ratios.

He is correct. *The force that counts is that applied at the load.
That depends on all the various levers, angles, etc. but it still
comes out to "what is the actual vertical force on the load". *It will
be considerably less than the force measured 'at the cylinder pivots'.

I also read this statement to suggest that he was thinking in terms of
vector mechanics such that only the vertical component of the
cylinder's force vector was applied to the load. If so. this has very
little to do with this type of system. The cylinder could be
horizontal, sideways of pointing down and still supply (almost)
exactly the same force at the load.

On second reading, it's really hard to tell exactly what he meant by
that second clause...