Sökning: L773:0031 9120 OR L773:1361 6552 >
Free fall and the e...
Free fall and the equivalence principle revisited
-
- Pendrill, Ann-Marie, 1952 (författare)
- University of Gothenburg,Lund University,Lunds universitet,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Nationellt Resurscentrum för Fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,National Resource Centre for Physics Education,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
-
(creator_code:org_t)
- 2017-08-31
- 2017
- Engelska.
-
Ingår i: Physics Education. - : IOP Publishing. - 0031-9120 .- 1361-6552. ; 52:6
- Relaterad länk:
-
http://dx.doi.org/10... (free)
-
visa fler...
-
https://gup.ub.gu.se...
-
https://doi.org/10.1...
-
https://lup.lub.lu.s...
-
visa färre...
Abstract
Ämnesord
Stäng
- Free fall is commonly discussed as an example of the equivalence principle, in the context of a homogeneous gravitational field, which is a reasonable approximation for small test masses falling moderate distances. Newton's law of gravity provides a generalisation to larger distances, and also brings in an inhomogeneity in the gravitational field. In addition, Newton's third law of action and reaction causes the Earth to accelerate towards the falling object, bringing in a mass dependence in the time required for an object to reach ground - in spite of the equivalence between inertial and gravitational mass. These aspects are rarely discussed in textbooks when the motion of everyday objects are discussed. Although these effects are extremely small, it may still be important for teachers to make assumptions and approximations explicit, to be aware of small corrections, and also to be prepared to estimate their size. Even if the corrections are not part of regular teaching, some students may reflect on them, and their questions deserve to be taken seriously. © 2017 IOP Publishing Ltd.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- SAMHÄLLSVETENSKAP -- Utbildningsvetenskap -- Pedagogik (hsv//swe)
- SOCIAL SCIENCES -- Educational Sciences -- Pedagogy (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas