Final Answer:
The string connected to point A exerts the smallest force on the connecting ring.
Step-by-step explanation:
In the given setup, the tension in each string represents the force exerted by the strings on the connecting ring. To determine the string with the smallest tension, we must consider the forces at equilibrium. For the system to remain in static equilibrium, the forces acting at the connecting ring must balance.
Denoting the angles between the strings and the vertical axis as θ₁, θ₂, and θ₃, the equilibrium condition in the vertical direction can be expressed as:
The tension
in the string connected to point A, with the smallest angle θ₁, will have the smallest contribution to the force exerted on the connecting ring. As the cosine function is smallest for smaller angles,
represents the smallest force among the tensions in the three strings.
Understanding the equilibrium of forces in a multi-string system allows us to identify the string exerting the smallest force. In this case, the trigonometric considerations indicate that the string connected to point A exerts the smallest force on the connecting ring.