For the rotational system shown in figure 1, determine the elastic force Fe in the spring connected at point A if the massless bar OB rotates upward with 2 degrees. Use positive sign. Numerical Values: The value of the elastic constant k is given as 108 N/m. Distances: a = 0.6 m, L = 0.9 m; a L A k B Figure 1. Original system, spring of elastic constant k connected at point A Accuracy required 2% Fe = 2.26 N Correct response: 2.261947 N 2.0% Marks 0.1 Due to design restrictions you are required to replace the spring connected at point A with an equivalent spring connected at point B as shown in figure 2 a L A K B Figure 2. Modified system, the spring was moved from point A to point B. Determine the equivalent spring constant 1' that will preserve the natural frequency of the system. k'= Number Marks 0.3 Section Attempt 3 of 3 N/m Verify