To determine whether an object will topple or move without a slope test, focus on the ratios of maximal lateral to normal force (static friction coefficient) and the distance between the center of mass and the base of support. The friction coefficient must be greater than or equal to the tangent of the slope angle, in this case, 15 degrees, which is approximately 0.268. Additionally, the object's base shape, center of mass position, and any external forces will significantly influence its stability. A specific equation can be formulated to calculate these factors, allowing for predictions without physical testing. Understanding these principles is essential for designing a device that can operate safely on inclined surfaces.