How can I apply statics principles to solve a problem with unknown forces?

[scotthands]

Homework Statement

http://aycu38.webshots.com/image/29917/2000751813907860134_rs.jpg

Homework Equations

http://aycu03.webshots.com/image/28722/2000720045713558449_rs.jpg

The Attempt at a Solution

http://aycu07.webshots.com/image/27726/2000735660703319218_rs.jpg

i assumed that there is a 90 degree angle at point B but I'm not sure if that's correct, I'm pretty stumped with this question...i just need a few pointers.

 

[PhanthomJay]

i assumed that there is a 90 degree angle at point B but I'm not sure if that's correct, I'm pretty stumped with this question...i just need a few pointers.

The tension in the cable acts in a direction along its length. You can calculate the angle that it makes at B from the given dimensions using trig. It is not 90 degrees. Once you determine the angle, get the x and y components from your relevant equations, and watch the direction, left or right, up or down.

 

[m2003]

I would advise you to carefully review the given information and make sure you understand the concept of statics and how to apply it in this situation. It is important to correctly identify all the forces acting on the object and their directions. Based on the given diagram, it seems like there is a missing force acting on the object at point A. Also, the angle at point B may not necessarily be 90 degrees, so it is important to double check that as well. Once you have all the necessary information, you can use the equations for static equilibrium to solve for the unknown forces. Remember to always check your units and make sure they are consistent. If you are still struggling, I would suggest seeking help from your teacher or a tutor to ensure that you fully understand the concept and can correctly apply it to solve the problem.