The complex shaft assembly shown below is made of steel (Gst = 75 GPa). A solid shaft with a diameter of 20 mm is fixedto the tube at point B using a rigid disk. The outer diameter of the tube is at 40 mm, while the wall thickness is 5 mm. Findthe:a Polar moment of inertia of the tube, m^4a. Polar moment of inertia of the solid shaft, m^4c Angle of twist at D, radiansAGAm150 N-m0.1 m0.3 m50 N-m

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t of inertia of the tube, m^4 t of inertia of the solid shaft, m^4 = at D, radians'

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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Concept explainers

Moment of Inertia

Inertia can be termed as a resistance offered by a body to change its state. A rigid body initially at rest will apply resistance when acted by an external force that tends to change its state of rest or velocity, or a body initially at motion will provide resistance in changing its state of velocity or motion for coming to a state of rest. In other words, Newton's first law of motion describes the law of inertia of a rigid body.

Question

The complex shaft assembly shown below is made of steel (Gst = 75 GPa). A solid shaft with a diameter of 20 mm is fixed
to the tube at point B using a rigid disk. The outer diameter of the tube is at 40 mm, while the wall thickness is 5 mm. Find
the:
a Polar moment of inertia of the tube, m^4
a. Polar moment of inertia of the solid shaft, m^4
c Angle of twist at D, radians
A
GAm
150 N-m
0.1 m
0.3 m
50 N-m

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