Posted by Allie on Thursday, October 27, 2011 at 9:12pm.
Let the unknown required force be F.
F + M*g = buoyant force
= (volume)*(water density)*g
Volume = (pi/6)*D^3 = 26.52 cm^3
M = Mass = 2.23 g
That is an extremely light ball. More like a balloon.
The buoyancy force is much larger than the weight.
Solve for F
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