When the cloth is pulled from under the glass, the glass experiences a change in its center of mass. This causes a shift in the balance of forces acting on the glass, causing it to topple.
The angle at which the glass will topple depends on factors such as the weight and shape of the glass, as well as the friction between the glass and the surface it is resting on. Therefore, there is no specific angle at which the glass will always topple.
Yes, the speed at which the cloth is pulled can affect the toppling of the glass. If the cloth is pulled too slowly, the glass may have time to adjust to the change in forces and remain standing. However, if the cloth is pulled quickly, the glass is more likely to topple.
The glass may remain standing if the pulling force is not strong enough to overcome the force of friction between the glass and the surface it is resting on. In this case, the glass will simply slide along with the cloth and not topple.
Yes, the material of the cloth can affect the toppling of the glass. A cloth with a higher coefficient of friction will provide more resistance against the glass and therefore make it more likely to topple. Additionally, a thicker or heavier cloth may also have a greater effect on the glass's center of mass, increasing the chances of toppling.