Forces Review (Flashcard 2)

Front

What is the normal force?

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

How is the normal force calculated on an inclined plane?

Back

The normal force (N) on an inclined plane is calculated as N = W cos(Θ), where W is the weight of the object and Θ is the angle of inclination.

Front

What does a Free Body Diagram (FBD) represent?

Back

A Free Body Diagram (FBD) represents all the forces acting on an object, allowing for the analysis of the object's motion.

Front

What does it mean if an object is accelerating?

Back

If an object is accelerating, it means that its velocity is changing over time, which can be due to a net force acting on it.

Front

What is the condition for an object to be in equilibrium?

Back

An object is in equilibrium when the net force acting on it is zero, meaning all forces are balanced.

Front

What is the relationship between tension forces in a system?

Back

In a system with multiple tension forces, the tensions can be equal or different depending on the configuration and forces acting on the object.

Front

What is the formula for net force when friction is absent?

Back

When there is no friction, the net force (F_net) is equal to the component of gravitational force acting along the incline, F_net = sin(θ) * mg.

Front

What is the significance of the angle in inclined plane problems?

Back

The angle of inclination (Θ) affects the distribution of forces acting on an object, influencing both the normal force and the net force.

Front

What does it mean for forces to be in opposite directions?

Back

Forces acting in opposite directions will cancel each other out if they are equal in magnitude, resulting in a net force of zero.

Front

How do you determine the magnitude of the normal force on a flat surface?

Back

On a flat surface, the magnitude of the normal force is equal to the weight of the object, N = W.