Answer
A LEVER
槓桿
WINDOW QUESTION · ANSWERBUILD CLUB
The question
WHAT SIMPLE MACHINE USES A LONG ARM AND FULCRUM TO TRANSFER FORCE TO THE OTHER END?
由長臂和支點組成、能把力量傳到另一端的簡單機械叫什麼？
Why it works
THE FULCRUM SUPPORTS THE ARM, TURNING THE INPUT FORCE INTO A LARGER MOVEMENT AT THE OTHER END
支點支撐長臂，讓輸入力在另一端產生更大的移動
See it in action · THE CATAPULT LEVER
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