#15 answer both parts please

(4%) Problem 15: Near the top of the Citigroup Center building in New York City, there is an object with mass of 3.6 x 105 kg on springs that have adjustable force constants. Its function is to dampen wind-driven oscillations of the building by oscillating at the same frequency as the building is being driven- the driving force is transferred to the object, which oscillates instead of the entire building. Forbes, David - david.forbes@doane.edu @theexpertta.com - tracking id: 9N69-72-B9-45-AB7A-40021. In accordance with Expert TA's Terms of Service, copying this information to any solutions sharing website is strictly forbidden: Doin so may result in termination of your Expert TA Account. A 50% Part (a) What effective force constant, in N/m, should the springs have to make them oscillate with a period of 1.8 s? Grade Summary k = Deductions Potential 100 sinO cos() tan() 8 9 HOME Submissions cotan() asin() acos() 4 5 6 Attempts remaining: 9 (0% per attempt) atan() acotan( sinh() 2 3 detailed view cosh() tanh() cotanh() END Degrees O Radians VO BACKSPACE CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback. A 50% Part (b) What energy, in joules, is stored in the springs for a 2.2 m displacement from equilibrium