All Flashcards
What are the differences between balanced and unbalanced forces?
Balanced forces: Sum to zero, maintain translational equilibrium, no change in velocity. | Unbalanced forces: Result in a non-zero net force, cause acceleration.
What are the differences between static and dynamic equilibrium?
Static equilibrium: Object is at rest, net force is zero. | Dynamic equilibrium: Object is moving at constant velocity, net force is zero.
What are the differences between inertial and non-inertial reference frames?
Inertial reference frame: Newton's first law holds true, non-accelerating. | Non-inertial reference frame: Accelerating, Newton's first law may not directly apply (fictitious forces may be needed).
What is the effect of a net force acting on an object?
The object accelerates in the direction of the net force.
What happens if the net force on an object is zero?
The object maintains its state of motion (either at rest or moving at a constant velocity).
What is the effect of balanced forces on an object?
The object's velocity remains constant; it is in translational equilibrium.
What is the effect of unbalanced forces on an object?
The object accelerates in the direction of the net force.
What is the effect of zero net force on an object?
The object maintains a constant velocity (either at rest or moving at a constant speed in a straight line).
What is the effect of unbalanced forces on an object?
The object accelerates (changes its velocity).
What happens when an object's mass increases?
Its inertia increases, making it harder to change its state of motion.
What happens if the reference frame is accelerating?
Newton's First Law does not directly apply; fictitious forces may be needed to explain motion.