Calculate the horizontal force F that should be applied to the 100 lb weight shown so that the cable AB is inclined at an angle of 30° with the vertical.

Question

Robert · Accepted Answer

Equation of motion: 0F P T    
Where T is the tension in the cable AB, P is the force of gravity and 
F is the force applied 
Equation in y direction:  
cos30 0
cos30
2 200
3 3
P
T P T
P
T lb
   
  
 
Equation in x direction:

Calculate the horizontal force F that should be applied to the 100 lb weight shown so that the cable AB is inclined at an angle of 30° with the vertical.

Solution

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