Class Management Help HW 13 Begin Date: 11/6/2017 11:00:00 AM — Due Date: 11/20/2017 11:00:00 AM End Date: 11/20/2017 11:00:00 AM (10%) Problem 8: Near the top of the Citigroup Center building in New York City, there is an object with mass of 3.4 x 102 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 – 3.4 x 105 kg t= 2.6 s d=2.8 m × 50% Part (a) what effective force constant should the springs have to make them oscillate with a period of 2.6 s in Nm? Grade Summary k= 2.58 * 106, 5% 95% Potential Submissions Attempts remaining:4 50% per attempt) detailed view cos0 7 89 HOME sin0 cotan0asin0 acosO atan0 acotan0 sinh0 cosh0 tanh cotanh0 O Degrees O Radians 5% END BACKSPACE DEL CLEAR Submit Hint I give up! Hints: 1 % deduction per hint. Hints remaining: 2 Feedback: 1% deduction per feedback. 50% Part (b) What energy is stored in the springs for a 2.8 m displacement from equilibrium in J? All content© 2017 Expert TA LLC