Large AC motors (used in things like factory machines) work in a slightly different way: they pass alternating current through opposing pairs of magnets to create a rotating magnetic field, which "induces" (creates) a magnetic field in the motor's rotor, causing it to spin around.
150x1000 (turn km into m)
=150000m
150000 / 60 (hour to min)
=2500m/min
2500 / 60 (min to sec)
=41.6666666
=41,1/3 m/s
Answer:
i.e.

Explanation:
Given:
angular speed,
mass of the disk, 
radius of the disk, 
mass of the chunk, 
radius of the chunk, 
We know that the angular momentum is given by:

and moment of inertia for a disc:

According to the conservation of angular momentum, the final angular momentum is equal to the initial angular momentum.



