Does friction depend on mass?

Explanation

**Step-by-Step Solution:**

1. **Understanding Friction**: Friction is a force that opposes the relative motion between two surfaces in contact. It plays a crucial role in everyday activities, such as walking, driving, and holding objects.

2. **Factors Affecting Friction**: The frictional force depends on two main factors:
- The **normal force** (the perpendicular force exerted by a surface on an object resting on it).
- The **roughness of the surfaces** in contact (how smooth or rough the surfaces are).

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