%eff = 100% * Work Out / Work In
Mechanical
Efficiency
IMA = Distance In / Distance Out
AMA = Force Out / Force In
Mechanical
Advantage
Machine
Simple
Machines
Angles
Forces
Diagrams: Identify
∑ τ = 0
Rotational Equilibrium
∑ F = 0
Translational equilibrium
Equilibrium
Strong Nuclear
Electro Weak
{ E&M + Weak Nuclear }
Gravity
Three types of
Fundamental
Interactions
Center of Mass
Center of Gravity
Define:
d = Distance to Line of Action
θ = Angle between Force
and Moment Arm
F = Force
r = Moment Arm
τ = ± r F sin(θ) = ± F d
Right Hand Rule
Cross Product
τ = r × F
VECTOR Product of
moment arm and force
Torques
pound = slug ft / s²
dyne = g cm / s²
Newton = kg m / s²
Units
Ff = μ Fn
Coefficient
of Friction
Normal
Force
Kinetic
Static
Friction
Free
Body
Diagram
weight
Force
Mass
Inertia
Define:
Action / Reaction
F = m a
Inertia
Newton's
Laws Of
Motion
Forces
Unit V
PHYS
1401 / 2425
