* Newton's Law of Universal Gravitation: This law states that every particle in the universe attracts every other particle with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
* Acceleration due to Gravity: This means that the force of gravity causes all objects to accelerate towards the Earth at the same rate, approximately 9.8 m/s².
* Mass and Weight: While heavier objects have a greater force of gravity acting on them, they also have more inertia (resistance to change in motion). This means that the increased force of gravity is exactly counterbalanced by the increased inertia, resulting in the same acceleration.
Why Doesn't this Always Happen in Real Life?
In reality, air resistance plays a significant role. This is why a feather falls much slower than a rock.
* Air Resistance: Air resistance is a force that opposes the motion of an object through the air. It depends on factors like the object's shape, size, and speed. Lighter objects with a larger surface area experience more air resistance.
* Terminal Velocity: As an object falls, it eventually reaches a point where the force of air resistance equals the force of gravity. At this point, the object stops accelerating and falls at a constant speed called terminal velocity.
In a vacuum, there is no air resistance, so objects fall at the same rate regardless of their mass or shape. This is why the famous experiment of dropping a feather and a hammer on the moon resulted in them landing simultaneously.
