Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences Comments and invited replies
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Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences RSS feed -- recent Comments and invited replies articles1471-2946Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences1364-5021<![CDATA[The theory on 'gravity-driven horizontal locomotion is flawed; a commentary on 'Gravity-driven horizontal locomotion: theory and experiment by Kanstad & Kononoff (2015)]]>
http://rspa.royalsocietypublishing.org/cgi/content/short/473/2197/20160683?rss=1
In a recent paper, Kanstad & Kononoff (Proc. R. Soc. A471, 20150287. (doi:10.1098/rspa.2015.0287)) presented a theoretical analysis of the mechanical energetics of a particular style of human walking and running. According to their analysis, the force of gravity provides energy when this style of horizontal walking/running is adopted. Furthermore, Kanstad & Kononoff suggested that uphill walking at zero energy cost is possible when the suggested style of walking is adopted. In this commentary, we argue that these claims violate the basic laws of thermodynamics, and are based on erroneous application of the basic laws of classical mechanics.
]]>2017-01-18T00:05:27-08:00info:doi/10.1098/rspa.2016.0683hwp:master-id:royprsa;rspa.2016.06832017-01-18Comments and invited replies47321972016068320160683