Solution Found!
Helicopter blades withstand tremendous stresses. In
Chapter 6, Problem 15(choose chapter or problem)
Problem 15PE
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.
(a) Calculate the magnitude of the centripetal acceleration at the tip of a 4.00 m long helicopter blade that rotates at 300 rev/min.
(b) Compare the linear speed of the tip with the speed of sound (taken to be 340 m/s).
Questions & Answers
QUESTION:
Problem 15PE
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.
(a) Calculate the magnitude of the centripetal acceleration at the tip of a 4.00 m long helicopter blade that rotates at 300 rev/min.
(b) Compare the linear speed of the tip with the speed of sound (taken to be 340 m/s).
ANSWER:
Problem 15PE
Solution 15 PE
Step 1 of 4:
In this question, we need to find magnitude of the centripetal acceleration at the tip of the helicopter
In the second part we need to find the linear speed and compare the same with the velocity of the sound
Data given
Length of blade
Angular velocity
Converting this to rad/s