Equilibrium

• no friction
• a=0.....ax=0   ay=0

Inclines (Static)

• fs=mFN
• a=0
• +in direction of a
•  no air resistance
• m=tan(angle)

Inclines (Kinetic)

• fk=mFN
• +in direction of a
•  no air resistance
• ay=0

Pulleyès

• frictionless palleys trope
• no air resistance
• multiple FBD
• + in direction of a
• T1=T2
• a of system is the same

Trainès

• 1FBD for 2
• 3FBD for T1,T2
• ay=0
• a is resistant
• no air resistance
• + in direction of a