Friction & Inclined Planes

Front

What is friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

What is the formula for calculating the force of friction?

Back

Frictional Force (f) = μ * F_N, where μ is the coefficient of friction and F_N is the normal force.

Front

What is the normal force on an inclined plane?

Back

The normal force is the component of the object's weight acting perpendicular to the surface of the incline.

Front

How does the angle of an incline affect the normal force?

Back

As the angle of the incline increases, the normal force decreases because it is calculated as F_N = mg cos(ϴ).

Front

What is the relationship between net force and acceleration?

Back

According to Newton's second law, if the net force is zero, the acceleration is also zero.

Front

What direction does friction act relative to the direction of motion?

Back

Friction always acts in the opposite direction to the direction of motion.

Front

What is the component of weight acting parallel to an incline?

Back

The component of weight acting parallel to the incline is calculated as F_parallel = mg sin(ϴ).

Front

What happens to the force of friction when an object is moving at constant speed down an incline?

Back

When moving at constant speed, the force of friction equals the component of weight acting down the incline.

Front

What is static friction?

Back

Static friction is the frictional force that prevents two surfaces from sliding past each other.

Front

What is kinetic friction?

Back

Kinetic friction is the frictional force acting between two surfaces in relative motion.