The only one I can think of is falling raindrops. Instead of spheres, air resistance shapes them into tiny hamburger buns . . . flat with a dimple on the bottom and round on top.
Friction can cause deformation in objects when a significant force is applied, often leading to a change in shape. This occurs in solid objects due to surface contact, in softer materials like clay, or when combined with other force applications. The extent of the deformation is influenced by the object's material properties and the magnitude of the force applied.
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