American Journal of Physics
We introduce a novel, two-mass system that slides up an inclined plane while its center of mass moves down. The system consists of two identical masses connected by an ideal string symmetrically placed over a corner-shaped support. This system is similar to a double-cone that rolls up an inclined set of V-shaped rails. We find the double-cone's motion easy to demonstrate but difficult to analyze. Our example here is more straightforward to follow, and the experimental observations are in good agreement with the theoretical predictions.
Gangopadhyaya, Asim and Rasinariu, Constantin, "The Motion of Two Identical Masses Connected by an Ideal String Symmetrically Placed Over a Corner" (2016). Physics: Faculty Publications and Other Works. 47.
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