A compound bow is a modern bow that
uses a levering system, usually of cables and pulleys, to
bend the limbs. When the string is drawn back, the string
causes the pulleys to turn. This causes the pulleys to pull
the cables, which in turn causes the limbs to bend and thus
store energy. As the bow is drawn, the draw weight increases
to a peak (~60lbs) and then "lets off" to between 65% and
80% of the peak weight, This let-off enables the archer to
accurately shoot a bow with a much higher peak draw weight
than most could manage with a longbow or recurve. Compound
Archers also use Magnifying Scopes and Release Aids to
Shoot.
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