We can hold a pen due to the

Options

A. force of gravity
B. force of friction
C. force of weight
D. work done by our muscles

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks why we are able to hold a pen. This involves understanding the forces at play when we grip an object.

2. **Identifying the Forces**: When we hold a pen, there are several forces acting on it and our hand. The key force that allows us to grip the pen without it slipping out of our hand is the frictional force.

3. **Defining Frictional Force**: Frictional force is the resistance that one surface or object encounters when moving over another. In this case, it is the force that prevents the pen from slipping out of our fingers.

4. **Analyzing the Interaction**: The surfaces of our hand and the pen are in contact. The roughness of these surfaces contributes to the frictional force. The greater the roughness, the higher the friction, which helps us hold the pen securely.

5. **Conclusion**: Therefore, we can conclude that we can hold a pen due to the frictional force between the pen and our hand.

**Final Answer**: We can hold a pen due to the frictional force.

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