The image describes a system involving three wooden blocks (A, B, and C) on a rotating platform. The blocks are connected to a rotating axis with frictional forces between them and the platform. The problem involves analyzing the rotational motion and frictional interactions.

The options listed suggest different statements about the forces and behaviors of the system as the platform accelerates.

Let's break down the choices:

• A: When $\omega = \sqrt{\frac{3\mu g}{4L}}$, the light frictional force is zero.
• B: The friction between block B and the platform increases continuously.
• C: When $\omega = \sqrt{\frac{\mu g}{L}}$, the frictional force between block C and the platform is zero.
• D: The maximum angular speed $\omega$ is $\sqrt{\frac{2\mu g}{L}}$.

These are multiple-choice questions related to the mechanics of the system. Do you want me to analyze or explain the details of any specific option, or walk you through solving the problem?