J What is the velocity of a metallic ball of radius r

Last updated: 6/27/2023

J What is the velocity of a metallic ball of radius r falling in a tank of liquid at the instant when its acceleration is one half that of a freely falling body The densities of metal and of liquid are p and a respectively and the viscosity of the liquid is n 1 p 20 2 r g 20 0 91 911 pm cross section area is hang from rigid end When weight of 1 kg is hung from it then 3 p 21 8 p 0 91 4