Abstract
A vertical wall and a horizontal floor meet at the point X. A vertical ladder AB is standing against the wall. A cat jumps onto it and sits at its midpoint C. This causes the ladder to move, with its apex A sliding along the wall down towards the floor, and its bottom B sliding along the floor away from the wall.
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Liu, A. (2018). Conic Sections. In: S.M.A.R.T. Circle Minicourses. Springer Texts in Education. Springer, Cham. https://doi.org/10.1007/978-3-319-71743-2_3
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DOI: https://doi.org/10.1007/978-3-319-71743-2_3
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