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).
Differentiate between balanced and unbalanced forces.
Balanced forces: Net force is zero, no change in velocity. Unbalanced forces: Non-zero net force, causes acceleration.
What is the difference between inertial and non-inertial reference frames?
Inertial frames: Newton's First Law holds. Non-inertial frames: Accelerating or rotating, require fictitious forces.
Compare equilibrium and 'no motion'.
Equilibrium: Constant velocity (can be zero). 'No motion': Object is at rest (zero velocity).
Define Newton's First Law.
An object maintains its state of motion unless acted upon by a net external force.
What is inertia?
The tendency of an object to resist changes in its state of motion.
Define translational equilibrium.
A state where the net force on an object is zero, resulting in constant velocity.
What is an inertial reference frame?
A reference frame in which Newton's First Law holds true; an object with no net force maintains constant velocity.
What is net force?
The vector sum of all forces acting on an object.