Impact force reduction by consecutive water entry of spheres
Rafsan Rabbi,
Nathan Speirs,
Akihito Kiyama
et al.
Abstract:Free-falling objects impacting onto water pools experience a very high initial impact force, greatest at the moment when breaking through the free surface. Many have intuitively wondered whether throwing another object in front of an important object (like oneself) before impacting the water surface may reduce this high impact force. Here, we test this idea experimentally by allowing two spheres to consecutively enter the water and measuring the forces on the trailing sphere. We find that the impact accelerati… Show more
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