#10

(6%) Problem 10: Near the top of the Citigroup Center building in New York City, there is an object with mass of 3.2 x 10 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 Randomized Variables m = 3.2 x 105 kg t = 12 s d = 2.6 m Forbes, David - david.forbes@doane.edu @theexpertta.com - tracking id: 9N69-72-B9-45-AB7A-40022, In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. 4 50% Part (a) What effective force constant should the springs have to make them oscillate with a period of 1.2 s in N/m? Grade Summary k =1 Deductions Potential 100% sinO cosO tan( 7 8 9 HOME Submissions cotan( asin( acos() E A 4 5 6 Attempts remaining: 1 (100% per attempt) atan( acotan() sinh() 2 3 detailed view cosh() tanh() cotanh() 0 END Degrees O Radians BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback. 4 50% Part (b) What energy is stored in the springs for a 2.6 m displacement from equilibrium in J