# HW 3 Begin Date: 9/20/2018 12:01:00 AM Due Date: 9/26/2018 11:59.00 PM End Date: 12/12/2018 11:59-00…

HW 3 Begin Date: 9/20/2018 12:01:00 AM Due Date: 9/26/2018 11:59.00 PM End Date: 12/12/2018 11:59-00 PM (10%) Problem 7: Helicopter blades withstand tremendous stresses. In addition to supporting the weight of a helicopter, they are spun at rapid rates and experience large centripetal accelerations, especially at the tip. Randomized Variables r-3,6 m pm 270 rpm 50% Part (a) Calculate the ce n etal accelerata a at the tip of al6 m long helicopter blade that ates aa ore nun in ma to e 2877.98 -2878 ノCorrect! 笄50% Part (b) Con pare the linear speed of the tip with the speed of sound taken to be 340 ms) Give your ans enn percent of the spe sound Grade Semma Deductioes Potential Attempts remairs cotaal ) | asil) | acoso atan() | acotaal ) | sind) cosh) an cotanh detailed ve Degrees Radians Hint Feedback Igheup Feedback: t dedaction per feedback Hists:1 deduction per hint Hants remaning Submission History