Topic: Theory of Machines
For the spring system given in figure, the equivalent stiffness is
- A. 5K/2
- B. 2K/5
- C. K
- D. 3K
Answer: C. K
Explanation: Upper two springs are in parallel, so equivalent stiffness K1 = K + K = 2K. This equivalent spring is in series with the bottom 2K spring. 1/K_eq = 1/2K + 1/2K = 2/2K = 1/K. Thus, K_eq = K.