With reference to figure of a cube of edge a and mass m, which of the following is the incorrect statement?
(O is the centre of the cube)
A
The moment of inertia of cube about z ’ is 
B
The moment of inertia of cube about z”is 
C
I x =Iy
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
B
: As z axis is parallel to z’ axisand distance between them 
By the theorem of parallel axes,
Hence, option is correct.
z and z” are notj parallel axes. Hence, option is incorrect.
By symmetry, 
hence, option is correct
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