An airplane sitting on a grassy field has a single propeller consisting of 3 identical blades, as shown in the diagram. Each blade has mass M, = 20 kg and length L = 0.8 m. The mass of each blade is not evenly distributed, so that the center of mass is located e= 0.3 m from the outer end of the blade. The moment of inertia of each blade about its center of mass is Iem =2 kg m². a) The propeller is initially at rest. The pilot then starts the engine and after 5 s the propeller is rotating at o = 30 radians/s. What is the magnitude of the angular acceleration a during that time assuming the angular acceleration is constant? blade b) What is the moment of inertia of the entire propeller about its axis of rotation? C.m. c) What is the magnitude of the net torque on the propeller during the initial 5 second period? blade d) At t = 5 s, when the propeller is spinning with angular velocity o = 30 radians/s, what is the speed of the outer tip of each blade of the propeller? C.m. -C.m. blade

An airplane sitting on a grassy field has a single propeller consisting of 3 identical blades, as shown in the diagram. Each blade has mass M, = 20 kg and length L = 0.8 m. The mass of each blade is not evenly distributed, so that the center of mass is located e= 0.3 m from the outer end of the blade. The moment of inertia of each blade about its center of mass is Iem =2 kg m². a) The propeller is initially at rest. The pilot then starts the engine and after 5 s the propeller is rotating at o = 30 radians/s. What is the magnitude of the angular acceleration a during that time assuming the angular acceleration is constant? blade b) What is the moment of inertia of the entire propeller about its axis of rotation? C.m. c) What is the magnitude of the net torque on the propeller during the initial 5 second period? blade d) At t = 5 s, when the propeller is spinning with angular velocity o = 30 radians/s, what is the speed of the outer tip of each blade of the propeller? C.m. -C.m. blade

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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