rammunition
Fully Loaded
+143|5863
Ok, I have an assignment on moments. I am a HNC student in Mechanical Engineering.

Now i have attached a copy of my assignment paper which I scanned. Also here is the link to the original drawing to make it easier to understand.

https://i294.photobucket.com/albums/mm101/Rammunition1/scan00021-1.jpg

https://i294.photobucket.com/albums/mm101/Rammunition1/scan0002-1.jpg

Now the horizontal and verticle forces sum is correct. But when I try to do the sum of moments (horizontal/vertical moments added together) I get 50.831 Kn when the answer should be 58.513 Kn. My lecturer gave me the answers but he said you have to show your working out so that you get it yourself.


Can someone help me?

BTW I have to determine the magnitude, direction and sense of the resultant and equilibrant forces acting on the component show in figur 1 (link above) and the perpendicular distance from their line of action from point z.
Im just stuck on the said bit.
Irishpride<3
[√] Flameworthy
+76|5302|Baile Atha Cliath, Éire
Liqs pro
Surgeons
U shud proabbly f off u fat prik
+3,097|6491|Gogledd Cymru

Can you not just work backwards with the correct answer if you're really stuck?
rammunition
Fully Loaded
+143|5863

The Sheriff wrote:

Can you not just work backwards with the correct answer if you're really stuck?
I could and will but i need to show how I got it
WldctARCHe
Member
+9|5359|Kansas
The sum of the moments is:  6*1 + 8*sin(45)*3 + 16cos(20)*2 + 16sin(20)*1 = 58.51305
Which is equivalent to: (Fc Horiz) + (Fb Vert) + (Fa Horiz) + (Fa Vert)
Fd does not contribute a moment because it goes through the point you're taking the moment about.
This is the same for Fb Horizontal because it goes through the point z as well.
Cybargs
Moderated
+2,285|6718
Blame the Jews for making such hard physics questions.
https://cache.www.gametracker.com/server_info/203.46.105.23:21300/b_350_20_692108_381007_FFFFFF_000000.png
SamBo
Blackburn Rovers Fan
+102|5325|Stoke, England
liq
Flaming_Maniac
prince of insufficient light
+2,490|6708|67.222.138.85
awwwww I was going to withhold that information WldctARCHe because I'm sure he doesn't want answers from dirty Americans.
13/f/taiwan
Member
+940|5700

Flaming_Maniac wrote:

awwwww I was going to withhold that information WldctARCHe because I'm sure he doesn't want answers from dirty Americans.
You shouldn't take things so personal...
S.Lythberg
Mastermind
+429|6448|Chicago, IL
ah fuck, moments of inertia, you're asking me to dig up my old physics 211 notes?
13urnzz
Banned
+5,830|6499

Finray wrote:

8-9=1
presidentsheep
Back to the Fuhrer
+208|5963|Places 'n such

burnzz wrote:

Finray wrote:

|8-9|=1
I'd type my pc specs out all fancy again but teh mods would remove it. Again.
13urnzz
Banned
+5,830|6499

absolutely.
rammunition
Fully Loaded
+143|5863

WldctARCHe wrote:

The sum of the moments is:  6*1 + 8*sin(45)*3 + 16cos(20)*2 + 16sin(20)*1 = 58.51305
Which is equivalent to: (Fc Horiz) + (Fb Vert) + (Fa Horiz) + (Fa Vert)
Fd does not contribute a moment because it goes through the point you're taking the moment about.
This is the same for Fb Horizontal because it goes through the point z as well.
Thanks dude, just what I was after
Flecco
iPod is broken.
+1,048|6666|NT, like Mick Dundee

Cybargs wrote:

Blame the Jews Muslims for making such hard physics questions.
Whoa... Can't believe these forums are still kicking.

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