Movable Pulleys (Leaving Cert Applied Maths): Flashcards

A pulley that moves up and down with the load

Fixed stays stationary; movable moves with load

Provides mechanical advantage by reducing force needed

Two sections

$\frac{a}{2}$

Inextensible, constant total length

Same throughout the string

$F = ma$

Identify which way each component will move

Draw force diagrams first

$F = \mu R$

Forgetting movable pulleys have TWO string sections

$2a$