Why did Galileo an angle of 8 for the incline?

Galileo chose an incline angle of 8 degrees for his experiments because it provided a balance between a manageable slope and measurable acceleration. A steeper incline would have resulted in excessive speeds and difficulties in measurement, while a gentler slope would have made the acceleration too small to observe effectively. This angle allowed him to study the motion of objects in a controlled manner, leading to his insights into the principles of acceleration and gravity.