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A cylinder with moment of inertia 20
kgm^2 rotates with angular velocity
9.97 rad/s on a frictionless vertical axle.
A second cylinder, with moment of
inertia 27.5 kgm^2, initially not rotating,
drops onto the first cylinder and
remains in contact. Since the surfaces
are rough, the two eventually reach the
same angular velocity. Calculate the
final angular velocity.
I2
wo
Before
After
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