a plane flies over a tree. what is the correct relationship of forces acting between the tree and the plane?
a plane flies over a tree. what is the correct relationship of forces acting between the tree and the plane?
Answer
Explanation:
Step1: Recall gravitational force concept
The plane and the tree have a gravitational - force interaction. The gravitational force acts along the line connecting their centers of mass, which is a vertical direction. The force on the tree due to the plane and the force on the plane due to the tree are an action - reaction pair according to Newton's third law.
Step2: Analyze force direction
The gravitational force between the tree and the plane is a vertical force. The force on the tree due to the plane pulls the tree towards the plane, and the force on the plane due to the tree pulls the plane towards the tree. Since the plane is above the tree, the force on the tree is upwards and the force on the plane is downwards.
Answer:
The second option (the one with vertical forces, one upwards and one downwards)