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Statics Problem, tension in crane

  • Thread starter meaton816
  • Start date
  • #1
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Homework Statement



The horizontal member ABC of the rig shown below weighs 1000 lbs and is supported by a pin B and cable EADC. Since the cable passes over pulleys at A and D, the tension is the same along the entire length of the cable. If the rig lifts 3000 lbs at a distance 12 feet from the vertical member DF, determine
a) the tension in the cable, and
b) the horizontal and vertical components of the reaction at B.



Homework Equations





The Attempt at a Solution



I know you have to use the sum of the moments in both x and y directions = 0 because it is in equilibrium, but im not sure where to go from there
 
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Answers and Replies

  • #2
hotvette
Homework Helper
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Might help to post the picture. The two rules of statics are:

1. Sum of moments about any point must be zero

2. Sum of all forces in any direction must be zero (normally it's convenient to use coordinate directions)
 
  • #3
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Heres a photo, sorry about that
 

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