All Flashcards
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.
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 are the key differences between Conservative and Nonconservative forces?
Conservative: Path-independent, potential energy exists, net work is zero over a closed path. | Nonconservative: Path-dependent, no potential energy, net work is not zero over a closed path.
Compare Positive, Negative, and Zero Work.
Positive: Energy added to the system. | Negative: Energy removed from the system. | Zero: No energy change.
What is the difference between work and energy?
Work: The process of energy transfer. | Energy: The state or capacity to do work.