new new new new (id: 4e71eb831)

本题目来源于试卷: new new new new，类别为 IB物理学

[问答题]
A flat puck (mass M ) is rotated in a circle on a9j dnhn(3sa1 c9fm.a t frictionless air-ho lh,6)1vwfpy xckey table6,yhl wpv1 )fxtop, 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

$v=\sqrt{\frac{m g R}{M}}$

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