Trickster_00
- 6
- 0
Question about System of Forces
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
2 replies · 2K views
- 25,837
- 258
Hi Trickster_00! 
it can act through anywhere
you could write it as a force acting through (97,6,300000) if you wanted to, but the accompanying couple would be different
(btw, if the force and the couple were co-planar, you could choose to make the couple vanish)
Trickster_00 said:
it can act through anywhere
you could write it as a force acting through (97,6,300000) if you wanted to, but the accompanying couple would be different
(btw, if the force and the couple were co-planar, you could choose to make the couple vanish)
- 25,837
- 258
oh, I see you've asked about that in another thread …
it's because we can always replace a couple by two equal and opposite forces in the same plane as the couple …
so we can make the two forces any magnitude we like, and in any direction in that plane that we like, so long as we adjust the distance between the two forces …
so make one of the two forces (in the couple) equal and opposite to the given force …
Trickster_00 said:
it's because we can always replace a couple by two equal and opposite forces in the same plane as the couple …
so we can make the two forces any magnitude we like, and in any direction in that plane that we like, so long as we adjust the distance between the two forces …
so make one of the two forces (in the couple) equal and opposite to the given force …
then they cancel, leaving only the other force in the couple