扭力彈弓torsion spring)係彈弓嘅一種。一條扭力彈弓喺俾人扭曲嗰陣會儲起力學能量,而當令佢扭曲嗰股力放手嗰陣,條彈弓會施一股旋轉嘅力令自己返去原先嘅形狀。

呢個裝置用扭力彈弓嘅力喺度振動