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Homework Statement
If a 4kg block is placed on top of a 5kg block which placed on a friction less plane and a force is applied on the lower 5kg block ,For what maximum value of force will the top block not slide ?
μ=0.036
Homework Equations
The Attempt at a Solution
The maximum static friction that the top block can experience is fmax=μ mg=12 N
But the force acts on the lower block so what will be the force on the upper block that the friction will counter?
It would be nice to get a free body diagram.