Equilibrium problem

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  • #1
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Homework Statement


[PLAIN]http://img820.imageshack.us/img820/3505/23625990.jpg [Broken]

Two uniform beams, each of mass M and length L, are connected by a hinge at the top and by a chain of negligible mass attached between their centers. The system will stand upright on a frictionless surface as shown in the figure. Determine (a) the tension in the chain, (b) the force on the hinge by each plank, (c) the force of the ground on each plank, as a function of the length of the chain, l.



Homework Equations



My force diagram.

[PLAIN]http://img440.imageshack.us/img440/2272/98244983.jpg [Broken]

Sum of F = 0
Sum of Torque = 0

Torque = (-T sinθ L ) + (-W cos θ L) + (Fx sin θ L) = 0

FxsinθL - WsinθL / sin θL = Tension is this right?

if this is right I will attempt part b.




The Attempt at a Solution




Homework Statement





Homework Equations





The Attempt at a Solution


Homework Statement





Homework Equations





The Attempt at a Solution

 
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Answers and Replies

  • #2
34
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FxsinθL - WcosθL / sin θL = Tension

edit: FxsinθL - WsinθL / sin θL = Tension

then it will simplfy as ,

T = Fx-W = Tension... now it doesn't even seem right
 

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