[Shop-talk] math wizards ??? come here

[john niolon]

I've got a math problem (actually trig) that I need help with.  Picture an
engine hoist with the boom horizontal.  the pivot point at one end... the
jacking point 1' in from that and the hook at the other end eight feet away.

I need to calculate the amount of lift at the hook end if you raise the jack
point 1".  I know how to figure it from the pivot point using that jack point
1" away is hanging me up.  If I know the lift with one inch of rise at the
jack point the multiplication tables will do the rest, right ????

here's a picture of what I'm doing

http://www.clubfte.com/users/jniolon/misc/boomraise.jpg

thanks
John


I think I've figured it out.....
my sole purpose in life is to serve as
a bad example  :(