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A wheel of moment of inertia 2 Kg m² is
rotating about an axis passing through
centre and perpendicular to its plane at a
speed 60 rad/s. Due to friction, it comes
to rest in 5 minutes. The angular
momentum of the wheel three minutes
before it stops rotating is
A) 24 Kg m?/s
C) 72 Kg m²/s
B) 48 Kg m²/s
D) 96 Kg m²/s

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