Mathematics · Rotational Dynamics
Two masses m and 2m are connected by a light string going over a pulley (disc) of mass 30m with radius r = 0.1 m. The pulley is mounted in a vertical plane and is free to rotate about its axis. If the system is released from rest, the speed of the 2m mass when it has descended through a height of 3.6 m is ______ m/s. (Assume the string does not slip and g = 10 m/s2)
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