* Earth's Mass: The Earth is incredibly massive. Its huge mass creates a strong gravitational pull that affects everything around it, including you.
* Book's Mass: A book, on the other hand, has a very small mass compared to the Earth. Its gravitational pull is so weak that you don't notice it.
Think of it like this:
* Earth's Gravity: Imagine a huge magnet attracting you. You feel that pull strongly.
* Book's Gravity: Imagine a tiny magnet trying to attract you. You wouldn't even notice its pull because it's so weak.
Distance also plays a role:
* Earth: You're standing on the Earth's surface, so you're very close to its center of mass, where its gravitational pull is strongest.
* Book: You're likely holding the book at a small distance from your body. This distance further weakens the book's already tiny gravitational pull.
In short, you feel the Earth's gravity because it's massive and you're close to it. You don't feel the book's gravity because it's much less massive and further away from you.
