Question

A small boy pushes a chair across a waxed floor. A friend sits down on the chair, and the boy pushes the chair across the floor again. How does the weight of the friend on the chair affect the friction between the chair and the floor?

• A. Friction is decreased because inertia increases.
• B. Friction stays the same because the chair is moving.
• C. Friction increases because the floor and chair are pressed together harder.
• D. Friction stays the same because the forces act in samedirections.

Answer 1

The correct option is C

Friction increases because the floor and chair are pressed together harder.

Friction increases because the floor and chair are pressed together harder.