7 Sep
2011
7 Sep
'11
12:13 a.m.
I agree with Chris and Mark. If it is just my arm doing the holding, it
takes the same radial force to execute the swing at a given rate of
rotation, mass, and radius, whether I am swinging around a lamppost or a
partner. If my partner is applying a similar radial force to my
shoulder blade, we can either each use less force or or we can swing
faster.
Dave
On 9/6/2011 8:53 PM, Jeff Kaufman wrote:
Mark Widmer wrote:
each person exerts 20 pounds on the other person,
and nobody is
exerting 40 pounds.
I really don't think so. Lets say the two of us are just
connected by
my hand on your back. It takes 20lbf to keep you from going flying,
and 20lbf to keep me from going flying. So my hand puts 40lbf on your
back, and your back puts 40lbf on my hand.
This ignores that there's no way we could swing this fast with just my
hand on your back.
Jeff
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