The rotational kinetic energy of a disc is 450 J and its moment of inertia is 100 kg `m^2`. What is its angular momentum ?

Explanation

To find the angular momentum of the disc, we can use the relationship between rotational kinetic energy (KE), moment of inertia (I), and angular momentum (L). The formulas we will use are:

1. The rotational kinetic energy is given by:
\[ KE = \frac{1}{2} I \omega^2 \]
where \( \omega \) is the angular velocity.

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