Block and tackle. This 'simple machine' uses rope and several pulleys to amplify lifting power | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Degginger, Phil |
Taille de l’image : | 4810 px × 3527 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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