To calculate the speed of the center of mass of the disk when the center has moved a certain distance, we need to consider the conservation of angular momentum. When the stick is released and becomes vertical, the angular momentum of the disk remains constant. This means that the product of the moment of inertia of the disk and its angular velocity must remain constant. Therefore, as the stick becomes vertical, the speed of the center of mass increases.
To calculate the speed of the center of mass of the disk when the center has moved a certain distance, we need to consider the conservation of angular momentum. When the stick is released and becomes vertical, the angular momentum of the disk remains constant. This means that the product of the moment of inertia of the disk and its angular velocity must remain constant. As the stick becomes vertical, the moment of inertia decreases, so the angular velocity increases.
To find the speed of the center of mass, we can use the formula v = ω * r, where v is the linear velocity of the center of mass, ω is the angular velocity, and r is the distance of the center of mass from the axis of rotation. Since the angular velocity increases as the stick becomes vertical, the speed of the center of mass also increases.
Therefore, the correct answer is A) m/s (speed value).