Question

For a simple case of a simply supported beam experiencing a point load at its center, which of the following equilibrium conditions hold?At any point on the beam:

1. The algebraic sum of the moments due to all forces acting on the beam is zero
2. The algebraic sum of vertical forces acting on the beam is zero
3. The algebraic sum of horizontal forces is always negative (less than zero)
4. The total acceleration experienced by the beam is zero

• A. All
• B. 1, 2
• C. None of these
• D. 1 only

Answer 1

Answer:

B. 1, 2

For a simply supported beam with a point load at its center, the equilibrium conditions are: the algebraic sum of vertical forces is zero, the algebraic sum of horizontal forces is zero, and the algebraic sum of moments due to all forces is zero