If the rotational kinetic energy of a body is increased by 300 %, then determine percentage increase in its angular momentum.

Explanation

To solve the problem, we need to determine the percentage increase in angular momentum when the rotational kinetic energy of a body is increased by 300%.

### Step-by-Step Solution:

1. **Understanding the Initial Conditions**:
- Let the initial rotational kinetic energy be \( E \).
- The problem states that the rotational kinetic energy is increased by 300%. This means the new kinetic energy \( E' \) can be expressed as:
\[
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