Friction Post Lab Questions 2025

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What are the four main types of friction?

Back

1. Static Friction: The friction that prevents an object from starting to move. 2. Sliding Friction: The friction that occurs when two surfaces slide past each other. 3. Rolling Friction: The friction that occurs when an object rolls over a surface. 4. Fluid Friction: The friction that occurs when an object moves through a fluid (liquid or gas).

Front

How can surfaces be made smoother to reduce friction?

Back

Surfaces can be made smoother by polishing them or using materials that have a lower coefficient of friction.

Front

What is the role of lubricants in reducing friction?

Back

Lubricants, such as oils and greases, create a thin layer between surfaces, reducing direct contact and thus decreasing friction.

Front

What is an example of rolling friction?

Back

An example of rolling friction is the friction experienced by the wheels of a skateboard as they roll on the ground.

Front

What happens to friction when surfaces are rough?

Back

When surfaces are rough, friction increases because there is more surface area in contact and more interlocking between the surfaces.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from starting to move.

Front

What is sliding friction?

Back

Sliding friction is the force that opposes the motion of two surfaces sliding past each other.

Front

How does pouring sand on ice help with friction?

Back

Pouring sand on ice increases friction by providing a rough surface for tires to grip, preventing slipping.

Front

What is the effect of using ball bearings on friction?

Back

Using ball bearings reduces friction by converting sliding friction into rolling friction, which is less resistant.