Heavier objects also have _______friction

Options

A. more
B. less
C. equal
D. no

Answer

To answer the question "Heavier objects also have _______ friction," we need to analyze the relationship between the weight of an object and the friction it experiences.

### Step-by-Step Solution:

1. **Understanding Friction**: Friction is a force that opposes the motion of an object. It depends on two main factors: the nature of the surfaces in contact and the normal force acting between them.

2. **Normal Force**: The normal force is the perpendicular force exerted by a surface to support the weight of an object resting on it. For an object resting on a horizontal surface, the normal force is equal to the weight of the object, which is given by the formula \( F_n = m \cdot g \), where \( m \) is the mass of the object and \( g \) is the acceleration due to gravity.

3. **Comparing Heavier and Lighter Objects**: If we consider two objects, one heavier (mass = \( M \)) and one lighter (mass = \( m \)), where \( M > m \):
- The normal force for the heavier object (N1) will be \( N1 = M \cdot g \).
- The normal force for the lighter object (N2) will be \( N2 = m \cdot g \).
- Since \( M > m \), it follows that \( N1 > N2 \).

4. **Friction and Normal Force Relationship**: The frictional force (F_f) can be expressed as:
\[ F_f = \mu \cdot F_n \]
where \( \mu \) is the coefficient of friction and \( F_n \) is the normal force. Since the normal force is greater for the heavier object, the frictional force will also be greater.

5. **Conclusion**: Therefore, heavier objects experience more friction compared to lighter objects. Thus, the correct answer to the question is "more."

### Final Answer:
Heavier objects also have **more** friction.