A child is on a playground they start to slide down a large slide. At what point is the child in dynamic equilibrium with the slide?(1 point) Responses When the child pushes themselves down the slides. When the child pushes themselves down the slides. As the child is in motion as they are sliding down. As the child is in motion as they are sliding down. When the slide ends and the child has stopped moving . When the slide ends and the child has stopped moving . The child will not reach dynamic equilibrium
When the child pushes themselves down the slide.
The child is in dynamic equilibrium with the slide when the slide ends and the child has stopped moving.
Dynamic equilibrium occurs when the forces acting on an object are balanced, resulting in a constant velocity or motion without acceleration. In the context of a child sliding down a large slide, there are two main forces at play: gravity pulling the child down and the frictional force between the child and the slide resisting their motion.
Initially, when the child starts sliding down the slide, they are not yet in dynamic equilibrium. As they descend, the gravitational force exceeds the frictional force, causing the child to accelerate. This is not a state of equilibrium.
However, as the child continues to slide down, the frictional force gradually increases due to the increased contact between their body and the slide surface. At a certain point, the frictional force will become equal and opposite to the gravitational force, resulting in a balanced situation. At this point, the child will reach dynamic equilibrium.
Therefore, the correct answer is: "As the child is in motion as they are sliding down."
It's important to note that dynamic equilibrium is a temporary state and it ceases when the slide ends and the child comes to a stop. So, the statement "When the slide ends and the child has stopped moving" is not considered a point of dynamic equilibrium.