All Flashcards
What is the difference between conservative and nonconservative forces?
Conservative forces: Path-independent, potential energy associated | Nonconservative forces: Path-dependent, no potential energy associated.
Compare positive and negative work.
Positive work: Energy added to the system | Negative work: Energy removed from the system.
Compare the effects of parallel and perpendicular force components on an object's energy.
Parallel Component: Changes the system's total energy | Perpendicular Component: Changes the direction of motion but not the energy.
What is Work in physics?
Energy transferred when a force acts over a distance.
Define Conservative Force.
A force where the work done is path-independent.
Define Nonconservative Force.
A force where the work done is path-dependent.
What is the Work-Energy Theorem?
The net work done on an object equals its change in kinetic energy.
Define Potential Energy.
Energy associated with conservative forces.
What is the effect of a nonconservative force like friction?
Dissipates energy, usually as heat.
What happens when net work is done on an object?
The object's kinetic energy changes.
What is the effect of a perpendicular force on an object's kinetic energy?
No change in kinetic energy; only changes direction.