Here's why:
* Newton's Law of Universal Gravitation: This law states that the force of gravity between two objects is proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
* Planet's Mass: A planet's mass is the amount of matter it contains. More mass means more matter, which translates to a stronger gravitational force.
* Effect on Gravity: Since gravity is proportional to mass, a planet with twice the mass will have twice the gravitational pull.
Important Note: While mass is the primary factor, the planet's density and radius also play a role in its gravitational pull.
Example:
* Earth is more massive than the Moon, which is why Earth's gravity is stronger. This is why we can jump higher on the Moon than on Earth.
Conclusion: A planet's gravity is directly proportional to its mass. The more massive the planet, the stronger its gravitational pull. This is a fundamental concept in understanding how planets and other celestial objects interact with each other.
