A 2 kg block is placed on top of another block of mass 5 kg . The system moves on a frictionless horizontal surface under the action of a force F = 28 N applied to the lower block. Find the minimum coeffient of static friction between the two blocks such that the upper block does not slide off?

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A 2 kg block is placed on top of another block of mass 5 kg . The system moves on a frictionless horizontal surface under the action of a force F = 28 N applied to the lower block.

Find the minimum coeffient of static friction between the two blocks such that the upper block does not slide off?

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