WORK, POWER, AND ENERGY Flashcards
refers to the measure of energy transfer that occurs when an object is moved over a distance by an external force, at least part of which is applied in the direction of the displacement.
Work
forces that generate work that only
depends on the initial and final position of the body
Conservative forces
states that the total mechanical energy on a system remains constant as long as the forces acting on the system are conservative forces.
Conservation of mechanical energy
are forces that depend on the path
taken by the body.
Nonconservative forces
energy an object possesses
because of its position in a gravitational field
Gravitational potential energy
Aristotle coined the word
“energeia”
“energeia” which means
being at work
relates the work done on an object
to the change in its kinetic energy
work-energy theorem
An object is referred to as elastic if it tends to go back to its original form after it has been deformed.
ELASTIC POTENTIAL ENERGY
“Energy can neither be created nor destroyed, only transformed,” and that “in a closed system (or one that is isolated from its environment), the system’s total energy is conserved.”
LAW OF CONSERVATION OF ENERGY
can be described as the rate at which work is done.
Power
occasionally used to describe the power output delivered by machines.
Horsepower
One horsepower is approximately equal to
746 watts.
