Block A, with mass mA = 10kg, is pulled to the right a distance x =...

 

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Block A, with mass mA = 10kg, is pulled to the right a distance x = 0.4m from the position it would have if the spring were relaxed (x=0). It is then released from rest. Assume ideal string, pulleys and wheels. The spring has constant k = 90 N/m. A. What is the acceleration of block A just after it is released? B. (optional) What is the speed of the mass when the mass passes through the position where the spring is relaxed (x=0)? B C A D E G x Block A, with mass mA = 10kg, is pulled to the right a distance x = 0.4m from the position it would have if the spring were relaxed (x=0). It is then released from rest. Assume ideal string, pulleys and wheels. The spring has constant k = 90 N/m. A. What is the acceleration of block A just after it is released? B. (optional) What is the speed of the mass when the mass passes through the position where the spring is relaxed (x=0)? B C A D E G x