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Stratus_Power
04-14-2003, 02:11 PM
anyone here done phys 124 or something like that want to teach me how to do rotational dynamics?? pm me! hehe
Ben
04-14-2003, 03:16 PM
yum, physics. :thumbsup:
Ben
04-14-2003, 03:27 PM
This kinds shit?

p=tw
t = mr2a
W=tf
K=[ 1/2]mv2+[ 1/2]I[(v2)/(r2)]
K=[ 1/2]Iw2
vcm=wr
szw
04-14-2003, 03:31 PM
like moments?
Stratus_Power
04-14-2003, 03:32 PM
like Torque= Force X level arm
center of gravity..
stuff liek that
szw
04-14-2003, 03:34 PM
what don't you get?
Killumanti
04-14-2003, 04:15 PM
uhhhhhhh, this aint high school physics is it by any chance?
lets hope not
Stratus_Power
04-14-2003, 04:19 PM
*suppose* to be first year phys haha

im stuck on this question
A uniform door (0.81m wide and 2.1 m high) weighs 140N and is hung on two hinges that fasten the long left side of the door to a vertical wall. The hinges are 2.1m apart. Find the magnitude nad direction of the horizontal component of the force applied to the door by
a) the upper hinge
b) the lower hinge.
Deter the magnitude and diretion of the force applied by the door to
c) the upper hinge
d) the lower hinge

there is one more but it has a diagram and i dont know how to show it.
Killumanti
04-14-2003, 04:25 PM
Originally posted by Stratus_Power
*suppose* to be first year phys haha



Guess not, I'm in Physics 20, n Western is a academic school, haven't learnt that lol.
GTS Jeff
04-14-2003, 04:30 PM
haha phys124 is basically physics 30...easiest course ever. i got 9 in that class without even trying..

iwain, i live about 10 minutes away from u and ill help u if u buy me a pizza or something
GTS Jeff
04-14-2003, 04:30 PM
im really hungry
Killumanti
04-14-2003, 04:33 PM
Originally posted by GTS Jeff
haha phys124 is basically physics 30...easiest course ever. i got 9 in that class without even trying..

iwain, i live about 10 minutes away from u and ill help u if u buy me a pizza or something



Originally posted by GTS Jeff
im really hungry


:rofl: :rofl:
Well it looks like he needs help, but what are the chances of him replying say in the next hour or two?

*EDIT* I take that back lol, he sbrowsing this section.

GO BUY HIM PIZZA!
szw
04-14-2003, 05:53 PM
Originally posted by Killumanti



Guess not, I'm in Physics 20, n Western is a academic school, haven't learnt that lol.

calling themselve an academic school doesn't mean anything!

And western sucks ass!
gpomp
04-14-2003, 05:54 PM
Originally posted by szw


calling themselve an academic school doesn't mean anything!

And western sucks ass!
:werd:
Ben
04-14-2003, 05:55 PM
I took Physics 30AP...91%, and that was at GRANDIN...the dumbest seperate High School in the city IMO. haha
Stratus_Power
04-14-2003, 06:20 PM
they didnt offer Physics AP when i was there.. or else i would've took it
but sorry Jeff.i would love to but im broke.. broke as in i haev 34 cents left on my meal card :P
three.eighteen.
04-14-2003, 06:47 PM
Originally posted by Ben
I took Physics 30AP...91%, and that was at GRANDIN...the dumbest seperate High School in the city IMO. haha

nope...the new one...whatever the hell its called south of canyon meadows
Killumanti
04-15-2003, 09:03 AM
Originally posted by szw


calling themselve an academic school doesn't mean anything!

And western sucks ass!

This school is fucked up like crazy, its more academic than cts, that makes a difference. I don't wanna start shit, but if Western sucks to ya, keep it to yourself. I could around saying that which ever school you went to/goto sucks ass, but I have no reason to.
Goliath
04-15-2003, 03:13 PM
here it is:

first find center of door (0.81m/2 for width and 2.1m/2 for length), then seperate the force into vectors (0i - 140j)N (assuming the question is 2D) then find the moments of the 2 hings using M=Fd (M= moment, F=force, d=distance) then let say you have the moment for the lower hing, use it to find the mag and dir of the upper hing (the force of the hing should applied to the left)

part b (Deter the magnitude and diretion of the force applied by the door ) the force is exactly the same but the directions are opposite.

hope this helps
szw
04-15-2003, 03:27 PM
Originally posted by Killumanti


This school is fucked up like crazy, its more academic than cts, that makes a difference. I don't wanna start shit, but if Western sucks to ya, keep it to yourself. I could around saying that which ever school you went to/goto sucks ass, but I have no reason to.

Go ahead say shit about my school.

BTW I go to U of C. I went to western.
Killumanti
04-15-2003, 05:59 PM
Originally posted by Killumanti

...I could around saying that which ever school you went to/goto sucks ass, but I have no reason to.