In the figure above, the system is in static equilibrium. The coefficient of static
friction between the block and the floor is &mu s = 1/n2.
The mass of the block that is hanging down is n1 Kg. The tangent of
the angle shown in the figure is tan &theta = 3/5. What is the
minimum value of mass, n3 Kg, that the block on the table can have
such that the system is in equilibrium?
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