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13 cards from this deck
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
a2\frac{a}{2}2a
Inextensible, constant total length
Same throughout the string
F=maF = maF=ma
Identify which way each component will move
Draw force diagrams first
F=μRF = \mu RF=μR
Forgetting movable pulleys have TWO string sections
2a2a2a
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