WEP Flashcards
1
Q
definition of work done
A
work done by a force on a body is the product of the force and the displacement in the direction of the force
2
Q
equations for elastic potential energy
A
(1/2)Fx
(1/2)kx^2
3
Q
principle of conservation of energy
A
energy can neither be created or destroyed, but it can be transformed from one form to another
4
Q
definition of energy efficiency
A
ratio of useful energy output to energy input
p
5
Q
definition of power
A
rate at which work is done
WD/t
6
Q
impt eqns for energy qns
A
total Ei + new WD = total Ef
net WD = total Ef-i
