@article{oai:toyama.repo.nii.ac.jp:00019685,
 author = {穴山, 彊},
 issue = {1},
 journal = {富山大学教育学部紀要 = Memoirs of the School of Education University of Toyama},
 month = {Oct},
 note = {Our country usually suffers from natural disasters. It is needed for us to have a faster action for saving lives or for removing obstacles on roads with human power. It is known that communities prepare iron levers and others to be used for the purpose at once. An iron lever is not so powerful to move heavy obstacles covering crashed houses or roads. Length of a popular lever is too short to get more powerful leverage effect. An iron lever can push things upward or forward mainly. If we can use the lever with a rope, we will be able to draw out obstacles. But the lever we have is too short to have big force. The author got a hint from Y-shaped huge log found at Jomon ruin at Oyabe city. The length of which is about 2.5meter. If the log was used as a lever with a rope, it can be a powerful lever to move things to any direction. This experiments of ‘leverage with a rope’, showed an extraordinary power saving effect with a simple action. You will be able to use a ladder as a long power full light lever with a rope. There is another transport method named ’Kake-nawa method’ being used by workers of small grade landscaping industry or forestry even now. The method can rotate obstacles as shown in last picture of this paper., Article, 富山大学教育学部紀要, 1巻1号, 2022.10.25, Page 105-110},
 pages = {105--110},
 title = {自然災害直後の人力による重量物運搬法 : 縄を併用する梃子及び掛け縄運搬の力学},
 volume = {1},
 year = {2022}
}