Determining the Support Reactions acting on a frame

[JJones_86]

Homework Statement

Determine the SUPPORT REACTIONS acting on the frame http://i34.tinypic.com/j94hoo.jpg"


You can see I have drawn the FBD, but I am lost on applying static equilibrium about point "F" because I don't know the distance from point "F" to any other point. In order for me to sum the moment about point "F" I'd need to know the distance from point "F" to ATLEAST point "B". So I'm not sure I have the support reactions set up correctly, any ideas or advice would be greatly appreciated. Thanks!

 

[Pyrrhus]

In this type of rigid bodies, you need to dismember (dismantle), and analyze (FDB) each member of the frame by applying Newton's 3rd Law.

 

[piercas]

Hello,

Thank you for reaching out for assistance with determining the support reactions on the frame. It is important to first understand the concept of support reactions and how they are calculated.

Support reactions refer to the forces and moments that are exerted on a structure at its supports. These reactions are necessary to keep the structure in equilibrium, meaning that all forces and moments acting on the structure must balance out.

In order to determine the support reactions on the frame, you will need to apply the principles of static equilibrium. This means that the sum of all forces acting on the frame must equal zero, and the sum of all moments must also equal zero.

To begin, you can start by breaking down the frame into individual components such as beams and joints. Then, identify all the external forces acting on the frame, including any applied loads or reactions from other structures that the frame is connected to.

Next, you can draw a free body diagram of the frame, indicating all the forces and moments acting on each component. You can then apply the equations of static equilibrium to solve for the unknown support reactions.

In this particular case, it seems that you are having trouble determining the distance from point "F" to any other point. One way to approach this is to use the concept of moments. The moment of a force about a point is equal to the force multiplied by the perpendicular distance from the point to the line of action of the force.

Therefore, you can choose any point on the frame (such as point "B") and calculate the moment of each force about that point. Then, you can set up an equation using the principle of moments, setting the sum of all moments equal to zero. This will allow you to solve for the unknown distance.

I hope this helps guide you in the right direction. It is important to carefully analyze and understand the problem before attempting to solve it. If you continue to have difficulties, I suggest seeking assistance from a tutor or professor. Best of luck with your homework.