There is one force which is exerted by all matter on all other matter. Which force is this?

Options

A. Gravitational force
B. Magnetic force
C. Electrostatic force
D. Frictional force

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a force that is exerted by all matter on all other matter. We need to identify which of the four forces listed (gravitational force, magnetic force, electrostatic force, and frictional force) fits this description.

2. **Analyzing the Options**:
- **Frictional Force**: This force requires contact between two surfaces. If two objects are not in contact, there can be no frictional force acting between them. Therefore, frictional force cannot be the answer.

- **Electrostatic Force**: This force acts between charged objects. If one object is uncharged, there will be no electrostatic force acting on it. Hence, this force does not act on all matter universally.

- **Magnetic Force**: This force acts between magnetic materials or charged particles. If an object is not magnetic (like wood), it will not experience a magnetic force. Thus, this force does not apply to all matter.

- **Gravitational Force**: This force acts between any two masses, regardless of their properties or distance apart. It is always present as long as there is mass, making it the only force that fits the criteria of being exerted by all matter on all other matter.

3. **Conclusion**: Based on the analysis, the force that is exerted by all matter on all other matter is the **Gravitational Force**.

**Final Answer**: Gravitational Force

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