Question: A flat puck (mass M) is rotated in a circle on a frictionless air-hockey tabletop, and is held in this orbit by a light cord

A flat puck (mass M) is rotated in a circle on a frictionless air-hockey tabletop, and is held in this orbit by a light cord connected to a dangling block (mass M) through a central hole as shown in Fig. 5-36. Show that the speed of the puck is given by

mgR

mgR

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