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Location:
Adelaide
Registered:
May 2002
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Re: HELP! Question on forces (Mechanical eng. problem!)
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Tue, 16 August 2005 23:12
 
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Hi there,
I cant see the pic unfortunately as my work server blocks almost everything...
Static problems are really simple when you just set a direction to be positive (eg up for y and right for x) and then just assign all forces a +/- symbol depending on which direction they are going, leave any unknown forces directionless. Do this for each member (ie make a FBD for each rigid part )
Then you have 3 equations, 1. sum in x direction = 0
2. sum in y direction = 0
3. sum of moments = 0
you will then know what direction your unknowns are going by solving these and looking at their sign.
This is generic but will work everytime 
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