2026-08-17 08:24:01: Work
This commit is contained in:
Vendored
+1
-1
@@ -17,6 +17,6 @@
|
||||
"repelStrength": 18.5634118967452,
|
||||
"linkStrength": 1,
|
||||
"linkDistance": 52,
|
||||
"scale": 0.6711465777142124,
|
||||
"scale": 1.1103605584768275,
|
||||
"close": true
|
||||
}
|
||||
Vendored
+40
-26
@@ -76,9 +76,23 @@
|
||||
"icon": "lucide-file",
|
||||
"title": "Translational Kinetic Energy"
|
||||
}
|
||||
},
|
||||
{
|
||||
"id": "f0185690f07606fe",
|
||||
"type": "leaf",
|
||||
"state": {
|
||||
"type": "markdown",
|
||||
"state": {
|
||||
"file": "physics/Work Energy and Power/Work.md",
|
||||
"mode": "source",
|
||||
"source": false
|
||||
},
|
||||
"icon": "lucide-file",
|
||||
"title": "Work"
|
||||
}
|
||||
}
|
||||
],
|
||||
"currentTab": 4
|
||||
"currentTab": 5
|
||||
},
|
||||
{
|
||||
"id": "25da4f0a48a8e7cd",
|
||||
@@ -262,43 +276,43 @@
|
||||
"obsidian-excalidraw-plugin:New drawing": false
|
||||
}
|
||||
},
|
||||
"active": "c320b38b4fa41973",
|
||||
"active": "f0185690f07606fe",
|
||||
"lastOpenFiles": [
|
||||
"physics/Work Energy and Power/Work Energy and Power.md",
|
||||
"physics/Work Energy and Power/Translational Kinetic Energy.md",
|
||||
"physics/Force and Translational Dynamics/Spring Force.md",
|
||||
"physics/Work Energy and Power",
|
||||
"physics/Force and Translational Dynamics/Gravitational Force.md",
|
||||
"physics/Force and Translational Dynamics/Newton's First Law.md",
|
||||
"physics/Force and Translational Dynamics/Newton's Second Law.md",
|
||||
"physics/Force and Translational Dynamics/Newton's Third Law.md",
|
||||
"physics/Force and Translational Dynamics/System and Center of Mass.md",
|
||||
"physics/Force and Translational Dynamics/Circular Motion.md",
|
||||
"physics/Force and Translational Dynamics/Forces and Freebody Diagrams.md",
|
||||
"physics/Force and Translational Dynamics/Force and Translational Dynamics.md",
|
||||
"root.md",
|
||||
"physics/Thermodynamics.md",
|
||||
"physics/acceleration.md",
|
||||
"Assets/Pasted image 20260816073410.png",
|
||||
"Assets/Pasted image 20260816081041.png",
|
||||
"physics/Work Energy and Power/Work.md",
|
||||
"physics/Work Energy and Power/Work Energy and Power.md",
|
||||
"biology/Cell Structure and Function/Cell Structure and Function.md",
|
||||
"biology/Cell Structure and Function/Origins of Cell Compartmentalization.md",
|
||||
"biology/Chemistry of Life/structure of water and hydrogen bonding.md",
|
||||
"biology/Chemistry of Life/Macromolecules.md",
|
||||
"math/multivariable calculus.md",
|
||||
"math/partial derivative.md",
|
||||
"physics/quantum mechanics.md",
|
||||
"biology/Chemistry of Life/Lipids.md",
|
||||
"biology/Chemistry of Life/Carbohydrates.md",
|
||||
"literacy/fallacies.md",
|
||||
"physics/Force and Translational Dynamics/Newton's Second Law.md",
|
||||
"physics/Force and Translational Dynamics/Newton's First Law.md",
|
||||
"physics/Force and Translational Dynamics/Newton's Third Law.md",
|
||||
"physics/Force and Translational Dynamics/Spring Force.md",
|
||||
"physics/Force and Translational Dynamics/Forces and Freebody Diagrams.md",
|
||||
"physics/dynamics.md",
|
||||
"physics/Kinetic and Static Friction.md",
|
||||
"physics/Lorentz force.md",
|
||||
"physics/physics.md",
|
||||
"physics/plancks constant.md",
|
||||
"physics/schrodinger equations.md",
|
||||
"physics/quantum mechanics.md",
|
||||
"physics/thermal expansion.md",
|
||||
"physics/Thermodynamics.md",
|
||||
"physics/constants.md",
|
||||
"physics/kinesmatics.md",
|
||||
"physics/acceleration.md",
|
||||
"Assets/Pasted image 20260816081041.png",
|
||||
"physics/Work Energy and Power",
|
||||
"Assets/Pasted image 20260816073410.png",
|
||||
"Assets/Pasted image 20260813174636.png",
|
||||
"biology/Cell Structure and Function/Cell Structure and Function.md",
|
||||
"Assets/Pasted image 20260816065000.png",
|
||||
"math/calculus.md",
|
||||
"Assets/Pasted image 20260816065016.png",
|
||||
"math/derivatives.md",
|
||||
"biology/Cell Structure and Function",
|
||||
"Assets/Pasted image 20260814125859.png",
|
||||
"Assets/Pasted image 20260815093612.png",
|
||||
"literacy/fallacies.md",
|
||||
"Assets/Pasted image 20260814131131.png",
|
||||
"physics/Force and Translational Dynamics",
|
||||
"Assets/Pasted image 20260813174454.png",
|
||||
|
||||
@@ -19,3 +19,4 @@ hale - to compel to go / (archaic) to pull draw drag or hoist
|
||||
incongruence - out of place/absurd
|
||||
olfactory - part of sensory system used for smells
|
||||
nebulous - misty/foggy/mysterious
|
||||
umbra - shadowy part
|
||||
@@ -0,0 +1,36 @@
|
||||
[[Work Energy and Power]]
|
||||
|
||||
# Summary
|
||||
* Work transfers energy in or out of a system. It's a scalar.
|
||||
* $W=fd\cos \theta$ for constant forces.
|
||||
* Work equals $F_{||}$ versus displacement integral.
|
||||
* Conservative forces do path independent work that is zero in a full loop and stays the same no matter what path is taken to the endpoint (e.g. gravity) while non-conservative forces care about the path taken (e.g. air resistance).
|
||||
* Net work = $\Delta K = \Sigma W_i$
|
||||
|
||||
## Conservative vs Non Conservative
|
||||
* Potential energy is conservative only
|
||||
* examples of conservative are gravity and spring
|
||||
* Conservative essentially means the work done only changes mechanical energy
|
||||
|
||||
* Non conservatives do work that convert mechanical energy into things like thermal energy (e.g. friction)
|
||||
* Usually converted to sound or thermal energy
|
||||
|
||||
Work by a constant force formula: $$W=F_{||}d=Fd\cos \theta$$
|
||||
$W$ is in joules
|
||||
$F$ is force in newtons
|
||||
$d$ is displacement
|
||||
$\theta$ is the angle between the force and displacement vector
|
||||
|
||||
Net work is the sum of work done by each force: $W_{net}=\Sigma F_{||,i}d$
|
||||
|
||||
Parallel component: $F_{||}=F\cos \theta$
|
||||
|
||||
Parallel component: $F_{\perp}=F\sin \theta$
|
||||
|
||||
Work-Energy Theorem:
|
||||
$$\Delta K=\Sigma_iW_i=\frac{1}{2}mv^2_f-\frac{1}{2}mv^2_i$$
|
||||
Net work = change in kinetic energy
|
||||
|
||||
For friction the mechanical energy lost to friction is modelled as: $$\Delta E_{mech}=F_fd\cos\theta$$
|
||||
When friction acts in the opposite direction to the motion (it usually is) the equation is modelled as: $$\Delta E_{mech}=-F_fd$$
|
||||
Work equals integral of the parallel force component $F_{||}$ versus d
|
||||
@@ -1,7 +0,0 @@
|
||||
[[kinesmatics]]
|
||||
a vector quantity that describes a change in velocity, denoted as $a$ or $\vec a$
|
||||
accel is to velocity as velocity is to position
|
||||
second derivative of position
|
||||
|
||||
$\vec a_{avg}= \frac{\Delta v}{\Delta t}$
|
||||
$\vec v_{avg}=\frac{\Delta d}{\Delta t}$
|
||||
@@ -1,11 +0,0 @@
|
||||
[[kinesmatics]]
|
||||
|
||||
$v_{{avg}}=\Delta d / \Delta t$
|
||||
$a_{{avg}}= \Delta v / \Delta t$
|
||||
$d=d_2-d_1$
|
||||
$d=v_1t+\frac{1}{2}at^2$
|
||||
$d=v_2t-\frac{1}{2}at^2$
|
||||
$d=\frac{1}{2}(v_1+v_2)*t$
|
||||
$v_2=v_1+at$
|
||||
$v_2^2=v_1^2+2ad$
|
||||
|
||||
@@ -1,2 +0,0 @@
|
||||
[[physics]]
|
||||
stuff like velocity vectors yadiyadiyada
|
||||
@@ -1 +0,0 @@
|
||||
[[physics]]
|
||||
@@ -1,4 +0,0 @@
|
||||
[[quantum mechanics]]
|
||||
|
||||
time independent equation:
|
||||
$$\hat{H}\psi = E\psi$$
|
||||
Reference in New Issue
Block a user