Solution Found!
Answer: A model of a helicopter rotor has four blades,
Chapter 3, Problem 26E(choose chapter or problem)
A model of a helicopter rotor has four blades, each 3.40 m long from the central shaft to the blade tip. The model is rotated in a wind tunnel at 550 rev/min. (a) What is the linear speed of the blade tip, in m/s? (b) What is the radial acceleration of the blade tip expressed as a multiple of the acceleration of gravity, g?
Questions & Answers
QUESTION:
A model of a helicopter rotor has four blades, each 3.40 m long from the central shaft to the blade tip. The model is rotated in a wind tunnel at 550 rev/min. (a) What is the linear speed of the blade tip, in m/s? (b) What is the radial acceleration of the blade tip expressed as a multiple of the acceleration of gravity, g?
ANSWER:Solution 26E
If is the rotational speed and is the radius of the the path of circular motion then the linear speed of the speed of the particle is given by
Step 1
In the given problem we have
And the radius of the path of the tip is
So the linear speed is