5. Consider a thin homogeneous plate with principal momenta of inertia along the principal axis x, along the principal axis x2 I I > I I;=I;+I¡ along the principal axis x3 Let the origins of the x; and x; systems coincide and be located at the center of mass 0 of the plate. At time t=0, the plate is set rotating in a force-free manner with an angular velocity 2 about an axis inclined at an angle a from the plane of the plate and perpendicular to the x-axis. If I,/I, = cos 2a, show that at time t the angular velocity about the x-axis is w,(1) = 2 cos a · tanh(2t sin a) %3D

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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5. Consider a thin homogeneous plate with principal momenta of inertia
along the principal axis x1
along the principal axis x2
I
I,> I,
I3=I;+I¡ along the principal axis x3
Let the origins of the x; and x; systems coincide and be located at the center of
mass 0 of the plate. At time =0, the plate is set rotating in a force-free manner
with an angular velocity 2 about an axis inclined at an angle a from the plane of
the plate and perpendicular to the x-axis. If I,/I, = cos 2a, show that at time t
%3D
the angular velocity about the x-axis is
w, (1) = N cos a · tanh(2t sin a)
Transcribed Image Text:5. Consider a thin homogeneous plate with principal momenta of inertia along the principal axis x1 along the principal axis x2 I I,> I, I3=I;+I¡ along the principal axis x3 Let the origins of the x; and x; systems coincide and be located at the center of mass 0 of the plate. At time =0, the plate is set rotating in a force-free manner with an angular velocity 2 about an axis inclined at an angle a from the plane of the plate and perpendicular to the x-axis. If I,/I, = cos 2a, show that at time t %3D the angular velocity about the x-axis is w, (1) = N cos a · tanh(2t sin a)
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