7. Friction, Inclines, Systems - Part 2 of 2
7. Friction, Inclines, Systems / Stacked Blocks / Problem 8
As shown in the figure, a force of 15 N is acting on a 2.5 kg steel box against a vertically lubricated steel surface. Determine whether the block will move vertically up or down or remain at its place if it is initially at rest.

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