Question 1

What is the gravitational constant G?

Accepted Answer

G = 6.674 × 10⁻¹¹ N·m²/kg². It’s a fundamental constant that determines the strength of gravity throughout the universe.

Question 2

Why is gravity so weak between everyday objects?

Accepted Answer

Because G is incredibly small. Gravity only becomes noticeable with extremely massive objects like planets and stars.

Universal Gravitation

物理