The mass and length of the bar are m = 4 kg and /= 1.2 m....

   

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The mass and length of the bar are m = 4 kg and /= 1.2 m. The spring constant is k = 180 N/m. If the bar is released from rest in the position 0 = 10 with the spring unstretched, what is its angular velocity when it has fallen to 0 = 30? k The mass and length of the bar are m = 4 kg and /= 1.2 m. The spring constant is k = 180 N/m. If the bar is released from rest in the position 0 = 10 with the spring unstretched, what is its angular velocity when it has fallen to 0 = 30? k