000			01449nam a22002057a 4500
005			20240508081549.0
008			240508b |||||||| |||| 00| 0 eng d
022			_a0031-921X
100			_aCampos, Nuno M.
245			_aTension On and Off in Atwood’s Machine _b: The Advantage of Video Analysis (Journal Article)
260			_aWashington _b: American Association of Physics Teachers , _c, January 2024
300			_a32–36p.
440			_aThe Physics Teacher _vVolume 62, Number 1, January 2024
500			_a***______{For Hard Copy, Please visit Library.}________***
520			_aAbstract: A centuries-old physics experimental apparatus, Atwood’s machine, featured in textbooks, exercise books, and web pages, concerns two hanging masses connected by a string over a pulley. In this paper, we propose the use of the Atwood’s apparatus together with a video analysis of the vertical movement of the hanging masses. By putting an obstacle in the path of the heavier mass, the tension of the string vanishes, and the lighter mass travels for a short while influenced by gravity only, like a projectile. When the string stretches again, the tension reappears, and the former acceleration is recovered.
650			_aNewtonian mechanics| Rotational dynamics| Video camera| Educational aids
700			_aDomingos, Sérgio R. | Silva, Pedro | Silva, Manuela Ramos
856			_uhttps://doi.org/10.1119/5.0106652
942			_cPER
999			_c45766 _d45765