Physics, 28.08.2019 06:20 afoakwacosmos
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. calculate the centripetal acceleration at the tip of a 4.20 m long helicopter blade that rotates at 270 rev/min.
compare the linear speed of the tip with the speed of sound (taken to be 340 m/s), i. e., calculate the ratio of the linear speed over speed of sound.
Answers: 1
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