A meter stick is pivoted about its centre. A piece of wax of mass
20 g travelling horizontally and perpendicular to it at
10 m/s strikes and adheres to one end of the stick so that the stick starts to rotate in a horizontal circle. Given the moment of inertia of the stick and wax about the pivot is
0.02 kg-m2, the initial angular velocity of the stick is (in
rad/s)
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