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.**

### Explanation:
According to Newton's Law of Gravitation, the gravitational force \( F \) between two objects with masses \( m_1 \) and \( m_2 \), separated by a distance \( r \), is given by:

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

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

This equation shows that gravitational force is **directly proportional to the masses** of the two objects (i.e., increasing the mass increases the force) and **inversely proportional to the square of the distance** between them.

Therefore, **B** is correct, as it specifically highlights the direct proportionality to the masses of the objects.

Would you like a deeper breakdown of the formula and its implications?

---

1. How does distance affect gravitational force between two masses?
2. What happens to gravitational force when the mass of one object is doubled?
3. Why is gravitational force considered a weak force compared to others like electromagnetic force?
4. How does gravitational force change if the distance between two objects is halved?
5. Why is the gravitational constant \( G \) important in gravitational calculations?

**Tip:** Remember that **inverse-square laws** apply to many forces in physics (e.g., gravitational and electromagnetic forces). This law shows that force decreases quickly with distance.

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. Based on Newton's Law of Universal Gravitation, this problem breaks down the key relationship between mass, distance, and gravitational force, suitable for high school students in Grades 9-12.

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