Forces Review (Flashcard 2)

Front

What is the net force acting on an object in free fall with no air resistance?

Back

The net force is equal to the weight of the object.

Front

Define normal force in the context of an object resting on a surface.

Back

The normal force is the force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.

Front

What is the relationship between normal force and weight on an inclined plane?

Back

The normal force is equal to the weight multiplied by the cosine of the angle of inclination (N = W cos Θ).

Front

How do you calculate the normal force on an inclined plane?

Back

N = W cos Θ, where W is the weight of the object and Θ is the angle of the incline.

Front

What does a free body diagram (FBD) represent?

Back

A free body diagram represents all the forces acting on an object, showing their direction and magnitude.

Front

If an object is accelerating, what can be said about the net force acting on it?

Back

The net force acting on the object is not zero.

Front

What is the formula for net force when friction is not present?

Back

F_net = m x a, where m is mass and a is acceleration.

Front

What happens to the net force if an object is moving at a constant velocity?

Back

The net force acting on the object is zero.

Front

What is the effect of friction on the motion of an object?

Back

Friction opposes the motion of an object, reducing its acceleration.

Front

How do you determine the direction of the normal force?

Back

The normal force acts perpendicular to the surface in contact with the object.