Assuming the weight of a water drop to be 0.05 gramms...
Do not assume anything...what is the fucking weight of a water drop...it weighs what it weighs...
the rotational force upon it...
Rotational force upon what?
...at the equator of the Earth with the angular velocity of 0.00007292115 rad/s (or rotational velocity of 465 m/s) would be as much as 0.000001789 N. To break it down to a tennis ball with the diameter of roughly 6.7 cm and the same force applied to the water drop we get 0.8389 rad/s, 0.0281 m/s, 0.1335 rev/s or just a bit over 8 rev/min.
Dunno about you guys but in my book that's not even remotely sufficient to throw the water drop off the tennis ball. 
Oh...I see...you are now trying to fucking claim a scaled down representation of the amount of water on the Earth as to a tennis ball is one fucking drop of water is to a tennis ball as the oceans/lakes/rivers, etc., is to the Earth...
Are you dense?
71 percent of the tennis ball would be covered by water at the same relative depth.
One fucking drop of water will not cut the mustard, you hayseed.