Gravitational force is directly proportional to the –
A.distance between two objects.
B.mass of the objects.
C.mass of and distance between two objects.
D.square of the distance between the objects.

The correct answer is:

**B. mass of the objects.**

Gravitational force (as described by Newton's law of universal gravitation) is directly proportional to the **masses of the two objects** and **inversely proportional to the square of the distance** between them. This relationship can be expressed with the formula:

\[
F = G \frac{m_1 \cdot m_2}{r^2}
\]

where:
- \( F \) is the gravitational force,
- \( G \) is the gravitational constant,
- \( m_1 \) and \( m_2 \) are the masses of the objects,
- \( r \) is the distance between the centers of the two masses.

This formula shows that while gravitational force increases with mass, it decreases with the **square** of the distance between objects.

Would you like to explore further details on gravitational forces or have other questions? 

Here are five related questions to deepen your understanding:
1. How does the gravitational force change if the distance between two objects doubles?
2. What is the role of the gravitational constant in the gravitational force formula?
3. How does gravitational force behave in cases of small vs. large masses?
4. How does gravitational force vary in relation to the radius of planets?
5. Can gravitational force be zero, and under what conditions?

**Tip:** Remember that gravitational force acts at a distance and decreases rapidly with increased separation due to the inverse square law.

Gravitational force is directly proportional to the –
A. distance between two objects.
B. mass of the objects.
C. mass of and distance between two objects.
D. square of the distance between the objects.

Explore how gravitational force is directly proportional to the masses of two objects and inversely proportional to the square of the distance between them. This problem covers key concepts of Newton's Law of Universal Gravitation, including the formula F = G * (m1 * m2) / r^2. Ideal for high school students in Grades 9-12.

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