Question

Necessary condition for the application of Perpendicular axes theorem i.e. $I_z=I_x+I_y$, where $x,y\text{and}z$ are the axes of rotation of body is

• A. Body must be two dimensional
• B. $x\text{and}y$ axes must lie in the plane of the body and $z$ axis must be perpendicular to the plane of body
• C. $x,y\text{and}z$ must be mutually perpendicular axes
• D. All of these

Answer 1

The correct option is D All of these


Necessary condition for the application of perpendicular axes theorem i.e.
$I_z=I_x+I_y$
where $x,y\text{and}z$ are the axes of rotation of body are:
1. Body must be two dimensional.
2. $x$ and $y$ axes must lie in the plane of the body and $z$ axis must be perpendicular to the plane of body.
3. $x,y$ and $z$ must be mutually perpendicular axes.