5. Did objects have to touch to interact? What causes this?

★ For example, a useful analogy for explaining the Earth's gravity force is that the Earth can pull on objects without touching them just like a magnet can affect other objects without touching them. In Addition, the main notion to convey here is that forces can act at a distance with no perceivable substance in between.

Explanation:

Hope you have a great day :)

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this