Forces, Free Body Diagrams, and Equilibrium

Flashcards based on lecture notes about forces, free body diagrams, and equilibrium.

What do free body diagrams represent in physics?

They illustrate all the forces acting on an object.

What is the formula for the net force?

F net = Total of all acting forces.

How is force measured in physics?

In Newtons.

What does the symbol F G represent in a free body diagram?

The force of gravity acting on an object.

What is the normal force denoted as in free body diagrams?

F N.

What does translational equilibrium mean?

It means the resultant force is zero.

If all forces are balanced, what can be said about the motion of the object?

The object will not accelerate.

What is the dependency of acceleration according to Newton's Second Law?

Acceleration occurs when there is an unbalanced force.

What are the two forces acting on an airplane during flight?

Lift (upwards force) and gravity (downwards force).

How do you add vectors graphically?

By placing them head to tail.

What is the result of adding three forces of 7, 4, and 2 Newtons in the same direction?

A maximum resultant force of 13 Newtons.

What happens if there is only a single unopposed force acting on an object?

The object will accelerate in the direction of that force.

What does it mean when F net equals zero?

There is no acceleration acting on the object.

How can planes fly if they are moving in equilibrium?

They can move at constant velocity without accelerating.

What does the term 'head to tail' refer to in vector addition?

It refers to positioning vectors in a way that the tip of one vector connects to the base of another.