Question: What are the steps on solving this? As shown in the figure, three blocks of mass 1kg each, connected by massless strings on a frictionless

What are the steps on solving this? As shown in the

What are the steps on solving this?

As shown in the figure, three blocks of mass 1kg each, connected by massless strings on a frictionless surface, are moving under the action of an external force F. If the tension is T=20N, what is the force F? (A) 25 N (B) 50 N (C) 30 N (D) 40 N (E) 10 N

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