Understanding One-Dimensional Truss Element Systems in Engineering

Exploring the Concepts of Static Equilibrium and Moment of Inertia

While the initial question seems incomplete or improperly transcribed, the additional information suggests a comparison between two systems with different setups, but equivalent moments of inertia.

For example, the moment of inertia for System A, with two discs of radius 2R, can be expressed in terms of System B, which has one disc of radius 2R and several smaller discs of radius R. To ensure that System A and System B have equal moments of inertia, the number, size, and mass distribution of elements in System B (the smaller disks) must be calculated in relation to the elements of System A (the larger disks).

Unfortunately, without the specific details or diagrams of the 3 truss element system, an accurate answer to the original question cannot be provided. However, the concepts from the reference material hold true for analyzing many structural and mechanical engineering problems involving equilibrium, moment of inertia, and torque.