Two blocks of masses 5 kg and 10 kg are connected by a massless spring as shown in the

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Two blocks of masses 5 kg and 10 kg are connected by a massless spring as shown in the diagram. A force of 100 N acts on 10kg mass as shown. At a certain instant the acceleration of 5 kg mass is 12 `m//s^(2)` find the force in the spring and acceleration of 10 kg mass..
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