Energy Flashcards
1
Q
Translational Kinetic Energy (Kt)
A
1/2mv^2
2
Q
Gravitational Potential Energy (Ug)
A
mgh
3
Q
Elastic Potential Energy (Us)
A
1/2kx^2
4
Q
Units
A
J (Joules)
5
Q
Total Mech Energy Equation
A
Ug + Us + Kt + Kr Wext = Ug’ +Us’ +Kt’ + Kr’ +Eth
6
Q
E thermal
A
Work due to friction
Fdcos0
7
Q
W ext
A
Fdcos0
8
Q
Rotational Kinetic Energy (Kr)
A
1/2Iw^2
9
Q
When work is done…
A
Energy of system changes
(bc work is f*d and force is needed for energy change)
10
Q
W =
A
change in K
Kf - Ki
11
Q
Power =
A
W/delta t
12
Q
Calculate Work from Graph
A
Area under force vs position
