The inertia constant of the two machines which are not swinging together are M1 and M2. The equivalent inertia constant of the system is:
- A. M1-M2
- B. M1+M2
- C. M1M2/(M1+M2)
- D. M1M2/(M1-M2)
Answer: C. M1M2/(M1+M2)
Explanation: For two non-coherent machines swinging against each other, the equivalent system inertia constant is given by their parallel combination: M_eq = (M1 × M2) / (M1 + M2).