000129904 001__ 129904 000129904 005__ 20241125101147.0 000129904 0247_ $$2doi$$a10.1119/5.0097946 000129904 0248_ $$2sideral$$a136211 000129904 037__ $$aART-2023-136211 000129904 041__ $$aeng 000129904 100__ $$0(orcid)0000-0003-3178-5253$$aTorcal-Milla, Francisco Jose$$uUniversidad de Zaragoza 000129904 245__ $$aCan 1 kg of Iron Float on Water? 000129904 260__ $$c2023 000129904 5060_ $$aAccess copy available to the general public$$fUnrestricted 000129904 5203_ $$aAll general physics textbooks include a chapter regarding hydrostatics. Archimedes’ and Pascal’s principles are commonly covered, but surface tension is merely named. Few people knows that surface tension contributes to the buoyancy of any object, with more or less relevance.1 I think that including surface tension in general physics courses is important to understand all phenomena regarding hydrostatics, and this is why every year, before starting the lesson regarding hydrostatics, I pose a question to the students: Can 1 kg of iron float on water? Usually, some of them answer instinctively, saying, “no, that is not possible.” Others, knowing that I am used to showing them physics “tricks” in the classroom, remain thoughtful. Anyway, it is a question that would be answered negatively by around 90% of questioned people. However, as I will show, there are at least two ways to make 1 kg of iron float. 000129904 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FEDER/E44-23R$$9info:eu-repo/grantAgreement/ES/UZ/PRAUZ-23-4628$$9info:eu-repo/grantAgreement/ES/UZ/d PRAUZ-23-4652 000129904 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000129904 590__ $$a0.5$$b2023 000129904 592__ $$a0.397$$b2023 000129904 591__ $$aPHYSICS, MULTIDISCIPLINARY$$b93 / 112 = 0.83$$c2023$$dQ4$$eT3 000129904 593__ $$aPhysics and Astronomy (miscellaneous)$$c2023$$dQ2 000129904 591__ $$aEDUCATION, SCIENTIFIC DISCIPLINES$$b72 / 86 = 0.837$$c2023$$dQ4$$eT3 000129904 593__ $$aEducation$$c2023$$dQ2 000129904 594__ $$a1.1$$b2023 000129904 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000129904 7102_ $$12002$$2385$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Física Aplicada 000129904 773__ $$g61, 8 (2023), 644-645$$pPhys. teach.$$tPHYSICS TEACHER$$x0031-921X 000129904 8564_ $$s485376$$uhttps://zaguan.unizar.es/record/129904/files/texto_completo.pdf$$yPostprint 000129904 8564_ $$s1910591$$uhttps://zaguan.unizar.es/record/129904/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000129904 909CO $$ooai:zaguan.unizar.es:129904$$particulos$$pdriver 000129904 951__ $$a2024-11-22-12:05:04 000129904 980__ $$aARTICLE