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bobble
bobble
00:00
going off to draw a picture
North Læraðr
North Læraðr
I wanna pay attention to what's going on so I'm prepared if I ever run into a similar problem in the future except I'm mad confused :P
But we're not at Newtonian laws yet
bobble
bobble
user image
Gareth McCaughan
Gareth McCaughan
Well, we're sort of using F = ma @NorthLæraðr
bobble
bobble
ahh it came out small
Gareth McCaughan
Gareth McCaughan
@bobble Small is fine.
North Læraðr
North Læraðr
00:02
@GarethMcCaughan A very complex one I see
bobble
bobble
middle angle is 90
top angle is... 90 - theta
(I think)
and that makes bottom angle theta
Gareth McCaughan
Gareth McCaughan
Top angle is theta again, no?
bobble
bobble
oh wait I was trying to flip it
but the force triangle just moved down
so yes, top angle = theta, bottom angle = 90 - theta
Gareth McCaughan
Gareth McCaughan
Right.
bobble
bobble
cos(theta) = F_norm/F_grav
F_norm = F_grav * cos(theta)
that was much quicker :)
Gareth McCaughan
Gareth McCaughan
00:05
Right.
bobble
bobble
Right, I'm using the second proof in the workbook and writing the first one down in my notes for later
Gareth McCaughan
Gareth McCaughan
Sounds like a good idea.
bobble
bobble
Okay, thank you :) No more questions as of right now
Gareth McCaughan
Gareth McCaughan
You're welcome!
bobble
bobble
Can someone move all of Gareth + my messages about physics to the chat we created?
Gareth McCaughan
Gareth McCaughan
00:07
I can. But first:
Gareth McCaughan
Gareth McCaughan
00:20
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