Gravitational force

Options

A. May be attractive or repulsive
B. Always attractive field force
C. May be contact force
D. Depends on nature of medium

Answer

### Step-by-Step Solution:

1. **Understanding Gravitational Force**:
- Gravitational force is a fundamental force of nature that acts between two masses. According to Newton's law of universal gravitation, this force is always attractive.

2. **Newton's Law of Universal Gravitation**:
- The formula for gravitational force \( F \) between two masses \( M_1 \) and \( M_2 \) separated by a distance \( r \) is given by:
\[ F = \frac{G \cdot M_1 \cdot M_2}{r^2} \]
- Here, \( G \) is the gravitational constant.

3. **Nature of Gravitational Force**:
- The gravitational force is always attractive. This means that it pulls the two masses toward each other. It cannot be repulsive.

4. **Analyzing Options**:
- If the question provides options regarding the nature of gravitational force, we need to identify which of the options correctly states that gravitational force is always attractive.

5. **Conclusion**:
- Based on the above analysis, the correct answer to the question regarding the nature of gravitational force is that it is always attractive. Therefore, if the options include "always attractive," that would be the correct choice.