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Feodalherren
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Homework Statement
Homework Equations
The Attempt at a Solution
Was trying to solve for the horizontal reaction at B. Why is BC a two-force member but not AE?
A two force member is a structural element that is only subjected to two external forces, with both forces acting in the same plane and along the same line of action. This means that the net force on the member is zero, resulting in no change in its translational motion.
To determine the internal forces in a two force member, you can use the method of sections or the method of joints. These methods involve analyzing the equilibrium of forces and moments acting on the member, and using equations such as the sum of forces and the sum of moments to solve for the internal forces.
Yes, a two force member can be in equilibrium as long as the two external forces acting on it are equal in magnitude, opposite in direction, and collinear. This means that the member experiences no net force and no change in its translational motion.
Some examples of two force members include ropes, cables, and beams that are only supported at two points. These members are often used in structures such as bridges, buildings, and cranes.
The use of two force members in engineering allows for a simpler analysis of structures, as the internal forces can be determined using basic equations of equilibrium. This also helps to reduce the weight and cost of the structure, as there are fewer forces to consider when designing the member.