| Author | Topic |
|---|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: HELP! Question on forces (Mechanical eng. problem!)
|
Tue, 16 August 2005 15:11
 
|
 |
fakr it's been a while..
iirc, you look at each joint individually starting from the easiest 
hmmm ok.. i kinda think like it's a big floppy system that you have to make solid by putting forces in...
talking vertical forces first..
BC has to provide the "up" force to hold up the load at C...
at A, the vertical load points down to counter the force at C and load.. (as tho it's pivoting around C)
now.. at B, you have to provide the vertical force for point C, but it is at an angle, so the member is pushing into the wall, but at C, BC is trying to push the top member away from the wall..
and so A also has a horizontal component pulling ALoad back toward the wall..
is this making any sense?
|
|
|
