A small spherical ball of radius 0.1 mm and density 10 4 kg m 3 falls freely under gravity through a a distance h before entering a tank of water. If after entering the water the velocity of ball does not change and it continue to fall with same constant velocity inside water, then the value of h will be_____m. (Given g = 10 ms -2 , viscosity of water = 1.0 x 10 -5 N-sm -2 ).
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(20)
Speed after falling through height h
Should be equal to terminal velocity
h=20m
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