A cubical box (equal side lengths) of mass 1.7 kg (outline shown in blue in the figure) is supported at an angle = 16 degrees relative to a horizontal surface. The cable supporting the box is at an angle perpendicular to the in-plane diagonal of the box (shown as a dotted line). What is the minimum coefficient of static friction between the box and the horizontal surface such that the box will not slide?

A cubical box (equal side lengths) of mass 1.7 kg (outline shown in blue in the figure) is supported at an angle = 16 degrees relative to a horizontal surface. The cable supporting the box is at an angle perpendicular to the in-plane diagonal of the box (shown as a dotted line). What is the minimum coefficient of static friction between the box and the horizontal surface such that the box will not slide?