Two blocks are connected by a massless s...

Two blocks are connected by a massless string that passes over a frictionless peg as shown in Fig. 3E.46. One end of the string is attached to a mass `m_(1) = 3 kg` i.e. a distance `R = 1.20 m` from the peg. The other end of the string is connected to a block of mass `m_(2) = 6 kg` resting on a table. From what angle `theta`, measured from the vertical, must the 3 kg block be released in order to just lift the 6 kg block off the table ?

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