Gun shots are made by pouring down molten lead through a hollow pipe from the top of a tower. The molten liquid while descending breaks into drops which are spherical due to
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Molten lead breaks into spherical drops due to surface tension. Surface tension is the property of a liquid that minimizes its surface area. For a given volume, a sphere has the smallest possible surface area. As the molten lead falls, surface tension acts to pull the liquid into this most efficient, spherical shape, overcoming other forces.
This is described by the surface energy equation: , where γ is the surface tension coefficient and ΔA is the change in surface area.
Final Answer: surface tension