Friction & Inclined Planes

Front

What is the Normal Force?

Back

The Normal Force (F_N) is the force exerted by a surface that supports the weight of an object resting on it, acting perpendicular to the surface.

Front

What is the formula for Normal Force on an inclined plane?

Back

F_N = mg cos(ϴ), where m is mass, g is acceleration due to gravity, and ϴ is the angle of the incline.

Front

What direction does the frictional force act on an inclined plane?

Back

The frictional force acts opposite to the direction of motion, opposing the sliding of the object.

Front

What is the relationship between weight and Normal Force on an incline?

Back

The Normal Force is always less than the weight of the object when on an incline, as it only counteracts the perpendicular component of the weight.

Front

How do you calculate the component of weight perpendicular to an incline?

Back

The component of weight perpendicular to the incline is calculated as W_perpendicular = mg cos(ϴ).

Front

How do you calculate the component of weight parallel to an incline?

Back

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

Front

What is the force of friction if a block is sliding down an incline at constant speed?

Back

The force of friction equals the component of weight parallel to the incline when the object is moving at constant speed.

Front

What happens to the Normal Force if the angle of the incline increases?

Back

As the angle of the incline increases, the Normal Force decreases because the cosine of the angle decreases.

Front

What is the effect of friction on an object sliding down an incline?

Back

Friction opposes the motion, reducing the net force acting on the object and affecting its acceleration.

Front

What is the maximum static friction?

Back

Maximum static friction is the force that must be overcome to start moving an object at rest, calculated as F_friction_max = μ_s * F_N, where μ_s is the coefficient of static friction.