Strength of Wet Sand

This lecture explores the importance of understanding the behavior of wet sand, a common granular material, in various fields such as industry, agriculture, and geology. The instructor conducts experiments to determine the strength of sand piles when mixed with water, using equipment like a funnel, scale, and ruler. By empirically studying the height of sand piles with added water, the instructor aims to confirm the results with a theoretical model, focusing on both dry and cohesive cases.