Potential Energy and Conservation of Energy Formula Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Relationship of potential energy and work

A

change in potential enrgy (Uf - Ui) = - Work
change in potential energy = integral f(x) dx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Gravitational potential energy

A

Change in U = mgy = mg(yf - y1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Elastic Potential Energy

A

U(x) = 1/2 kx^2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Mechanical Energy

A

Emec = KE + U

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Conservation of Mechanical energy

A

0 = (Kf - Ki) + (Uf - Ui)
Ki + Ui = Kf + Uf

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Potential Energy Cruves

A

F(x) = - d U(x) /dx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Work done on a system by an external force (w/out frictional force)

A

W = Emec = Change in KE + Change in U

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Work done on a system by an external force (w/ frictional force = Ethermal energy)

A

W = Emec + Eth
E thermal energy = force of kinetic friction (d)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Total energy E of a system

A

Work = Total Energy = change in Emec + change in Eth + change in internal energy (Eint)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Average Power

A

Pavg = change in Energy/change in time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

instantaneous power

A

P = dE/dt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly