나무 장대 지렛대 블록 올리기 : 건축 현장에서 나무 장대로 블록을 2층 지붕 위로 띄워 올리는 방법

Added: 2026-05-26

This video demonstrates how to lift heavy cement blocks (10-15kg each) to the second floor using a simple lever system with a wooden pole, where the fulcrum position determines the force required and lifting height—placing the fulcrum closer to the block reduces the force needed but increases the distance the operator must push, while placing it closer to the operator requires more force but achieves greater height, allowing two workers to efficiently lift materials without heavy machinery.