Work, Power, Energy Flashcards
work
performed when an object is displaced by the application of a force
energy transfer
energy
capacity to perform a work
negative work
done by a force acting on an object it the object is displaced in the direction opposite to the force acting on it
positive work
done by a force acting on an object if the object is displaced in the same direction as the force
power
used to express the amount of mechanical work performed in a given time interval
time rate of energy transfer
mechanical energy is composed of
energy associated with motion, position, or deformation
kinetic energy
associated with motion
gravitational potential energy
potential energy that an object has because of its position relative to a reference surface
elastic potential energy
potential energy stored in a deformed object
law of conservation and mechanical energy
in the absence of externally applied forces other than gravity, the total mechanical energy of a system remains constant
one form of energy transferred to another
