Can you say what does a ball on a table interact with and where the forces are exerted at each interaction?
On one hand, the ball interacts by contact with the table, but it does also at distance with the ball, due to gravity. In particular the forces we can identify are the following:
- Action force exerted by the ball on the table when resting on it. It is applied on the table.
- Reaction force exerted by the table over the ball. It is applied on the table.
- Force exerted by the Earth over the ball. It is applied over the ball.
- Force exerted by the ball over the Earth. It is applied over the Earth.