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11th
Physics
Systems of Particles and Rotational Motion
Moment of Inertia
Th moment of inertia of a r...
PHYSICS
Th moment of inertia of a rod of mass M and length L about an axis passing through on edge of perpendicular to its length will be :-
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ANSWER
Given,
Mass of rod =M
Length of Rod =L
Distance of rods edge from center =
2
L
Moment of inertia of rod at center I
c
=
12
1
ML
2
For moment of inertia at edge apply parallel axis theorem. I
e
=I
c
+M(
2
L
)
2
I=
12
1
ML
2
+M(
2
L
)
2
=
3
1
ML
2
moment of inertia at edge is
3
1
ML
2
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