Final answer:
A rigid beam supported by a pin at point A is displaced downward at point C due to a load. The downward force at point C is balanced by the upward tension forces in the wires BD and CE.
Step-by-step explanation:
The given figure represents a rigid beam supported by a pin at point A, with wires BD and CE. The load P on the beam causes the end C to be displaced 7 mm downward.
In this scenario, we can analyze the forces acting on the beam to determine the displacement of point C.
Since the beam is rigid and the wires are in tension, the downward force at point C is balanced by the upward tension forces in wires BD and CE.