The equivalence principle comes to school: falling objects and other middle school investigations
2014 (English)In: Physics Education, ISSN 0031-9120, E-ISSN 1361-6552, Vol. 49, no 4, 425-430 p.Article in journal (Refereed) Published
Comparing two objects falling together is a small-scale version of Galileo's classical experiment, demonstrating the equivalence between gravitational and inertial mass. We present here investigations by a group of ten-year-olds, who used iPads to record the drops. The movie recordings were essential in the follow-up discussions, enabling the students to compare the different situations and to discern situations where air resistance was essential and where it could be neglected. By considering a number of familiar situations and simple investigations that can be performed, e.g., on a playground, students may come closer to an appreciation of the deep significance of the non-influence of mass on motion under gravity.
Place, publisher, year, edition, pages
2014. Vol. 49, no 4, 425-430 p.
IdentifiersURN: urn:nbn:se:hkr:diva-12925DOI: 10.1088/0031-9120/49/4/425OAI: oai:DiVA.org:hkr-12925DiVA: diva2:748140