On Tue, 23 Oct 2007 22:19:51 -0400, clare at snyder.on.ca wrote:

BIG SNIP

All in all the questions were a bit poorly worded.


Hey Clare,

Too true!! But it was fun.

I really did want to pick the one where a weight was being held up "by
hand" versus pulled over a sheave from one of two angles. ( I think
that it was question # 15 .) With no proviso in the wording that the
sheaves had zero friction, the answer I gave should have been wrong,
as I picked the answer that all three were the same force. But I
"guessed" at what the point being made was, realizing it was only
rhetorical after noticing that it was kind of a limp-wristed grasp of
a line by just one "hand" that was holding up that 150 pounds. At
least nobody I know!

Brian Lawson,
Bothwell, Ontario.