Work - created from Mind Map

Page 1

Work/Energy Theorem

Only true when ΣF= Ma

Plug this and Newton's 2nd law into the definition for work and then integrate

ΔKE

Scalar

M=Kg

V^2=((m/^2)/(s^2))

Joule

Scalar

N

ΔxCos θ

Joule

When a⊥v, only direction is changed since Cos(90) = 0

Work is only done by a force when parts of F are F∥Δx

Conservative Forces

Depends only on end points A and B, not the specific path i.e not path dependent

Gravity

Springs

Non-conservative forces

Are path dependent, since they are velocity dependent

Drag

Kinetic Friction

The a is just a rearrangement of the calculus behind what acceleration is.

Observe that we have assumed that the body's mass does not change while the force is being applied so that we can remove it from under the integral.

http://youtu.be/2WS1sG9fhOk (Embed)

http://youtu.be/3mier94pbnU (Embed)

http://youtu.be/kw_4Loo1HR4 (Embed)

http://www.youtube.com/watch?v=YvacYWgygaA (Embed)

Work

Annotations

Supplementary videos