Question: The assembly starts from rest and reaches an angular speed of 1 5 0 rev / min under the action of a 2 0 -

The assembly starts from rest and reaches an angular speed of 150 rev/min under the action of a20-N force applied to the string for seconds. Determine . Neglect friction and all massesexcept those of the four 3-kg spheres, which may be treated as particles.

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