Two rods each of mass 
and length 
are joined at the centre to form a cross. The moment of inertia of this cross about an axis passing through the common centre of the rods and perpendicular to the plane formed by them, is
a)
b)
c)
d)
Two rods each of mass and length are joined at the centre to form a cross. The moment of inertia of this cross about an axis passing through the common centre of the rods and perpendicular to the plane formed by them, is
a)
b)
c)
d)
Question ID - 53229 | SaraNextGen Top Answer
Two rods each of mass and length are joined at the centre to form a cross. The moment of inertia of this cross about an axis passing through the common centre of the rods and perpendicular to the plane formed by them, is
a)
b)
c)
d)
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Two rods each of mass |
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a) |
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b) |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (b) -
(b)
When 
is length of rod and its mass, then the moment of inertia of its axis passing through its centre of gravity and perpendicular to its length is given by
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For two rods as shown,
127 votes
Answer Link
127