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posted by  bigtexmexbear on 10/30/2007 6:06:36 PM  |  status: Live  

torque exerted on the bar by the cord

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Algebra Based Physics N/A N/A N/A
Question Details:
A horizontal bar with a mass m suspended from one end is held by a cord with tension T, fastened at a distance D from the end of the bar that is attached to a wall with a frictionless pin.  What is the torque about the pin exerted on the bar by the cord?
                             
POSSIBLE ANSWERS:
1. DT cosθ
2. DT tanθ
3. DT(1-cosθ)
4. DT(1-tanθ)
5. DT(1-sinθ)
                               
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posted by Jackazz on 10/30/2007 6:09:50 PM  |  status: Live
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Figure your own Zshit out MotherFUcker
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posted by Jimbo84 on 10/30/2007 6:22:07 PM  |  status: Live
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bigtexmexbear's comment:
"thanks for your help on the previous question, i really appreciate it"
Response Details:
The force of the tension is applied at the point where the cable is attached to the bar.  The portion of that energy perpendicular to the bar is Tcosθ, this should be multiplied by the Distance D
 
the answer should be A
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