mechanics of fluid??? or fluid mechanics???
Raindrops of radius 1mm and mass 4 mg are falling with a speed of 30m/s on the head of a bald person .The drops splash on the head and then come to rest .A ssuming equivalently that the drops cover a distance equal to their radii ,, estimate the force exerted by each drop on the head !!!
( answer in single decimal place )
The answer is 1.8.
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1 solution
As a matter of fact by just looking at energy conservation one can solve this problem