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Questions  

A wheel of moment of inertia Ι and radius R is rotating about its axis at an angular speed ω0.  A small fragment of mass m breaks off from its rim. Find the final angular velocity of the wheel.

a
I  ω0I−mR2
b
ω0
c
I  ω0I+mR2
d
I+mR2ω0I

detailed solution

Correct option is B

Ι−mR2ω+mωR2=Ιω0⇒ ω=ω0

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