Consider Figure Q3. Determine the mass moment of inertia of the composite body about the ? and y axes.Mass of rod = 2 kg/mMass of disc = 15 kg/m2 YAR0.5 m0.2 m0.2 mCL 0.4 mFigure Q3 RRIx = I = mRIx = lz = mR-Iyy = Ig = mmL?mR?by =Iyy = mR?Ixx= 0 (negligible diameter)

Given information : mass of the rod per unit length = 2 kg/m mass of disc per unit length = 15…

Answered: Y A R0.5 m 0.2 m 0.2 m C 0.4 m B.

Engineering

Mechanical Engineering

Y A R0.5 m 0.2 m 0.2 m C 0.4 m B.

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

Consider Figure Q3. Determine the mass moment of inertia of the composite body about the ? and y axes.

Mass of rod = 2 kg/m
Mass of disc = 15 kg/m2

Y
A
R0.5 m
0.2 m
0.2 m
C
L 0.4 m
Figure Q3

R
R
Ix = I = mR
Ix = lz = mR-
Iyy = Ig = m
mL?
mR?
by =
Iyy = mR?
Ixx
= 0 (negligible diameter)

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